diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..963053a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,51 @@
+
+
+help:
+	@echo "Options"
+	@echo "---------------------------------------------------------------"
+	@echo "help:                     This help"
+	@echo "requirements:             Download requeroments"
+	@echo "requirements-test:        Download requirements for tests"
+	@echo "requirements-docs:        Download requirements for docs"
+	@echo "run-tests:                Run tests with coverage"
+	@echo "publish:                  Publish new version on Pypi"
+	@echo "clean:                    Clean compiled files"
+	@echo "flake:                    Run Flake8"
+	@echo "prepush:                  Helper to run before to push to repo"
+	@echo "---------------------------------------------------------------"
+
+requirements:
+	@echo "Installing dirty-models requirements..."
+	pip install -r requirements.txt
+
+requirements-test:
+	@echo "Installing dirty-models tests requirements..."
+	@make requirements
+	pip install -r requirements-test.txt
+
+requirements-docs:
+	@echo "Installing dirty-models docs requirements..."
+	@make requirements
+	pip install -r requirements-docs.txt
+
+run-tests:
+	@echo "Running tests..."
+	nosetests --with-coverage -d --cover-package=dirty_models
+
+publish:
+	@echo "Publishing new version on Pypi..."
+	python setup.py sdist upload
+	
+clean:
+	@echo "Cleaning compiled files..."
+	find . | grep -E "(__pycache__|\.pyc|\.pyo)$ " | xargs rm -rf
+
+flake:
+	@echo "Running flake8 tests..."
+	flake8 dirty_models
+	flake8 tests
+
+prepush:
+	@make flake
+	@make run-tests
+
diff --git a/README.rst b/README.rst
index 8ee2f04..0129ba9 100644
--- a/README.rst
+++ b/README.rst
@@ -43,6 +43,7 @@
 ============
 dirty-models
 ============
+
 Dirty models for python 3
 
 *************
@@ -54,6 +55,7 @@ http://dirty-models.readthedocs.org
 ********
 Features
 ********
+
 - Python 3 package.
 - Easy to create a model.
 - Non destructive modifications.
@@ -77,6 +79,13 @@ Features
 Changelog
 *********
 
+Version 0.5.2
+-------------
+
+- Fix model structure.
+- Makefile helpers.
+
+
 Version 0.5.1
 -------------
 
@@ -88,14 +97,14 @@ Version 0.5.0
 - Added autolist parameter to ArrayField. It allows to assign a single item to a list field,
 so it will be converted to a list with this value.
 
-    ..  code-block:: python
+..  code-block:: python
 
-        class ExampleModel(BaseModel):
-            array_field = ArrayField(field_type=StringField(), autolist=True)
+    class ExampleModel(BaseModel):
+        array_field = ArrayField(field_type=StringField(), autolist=True)
 
-        model = ExampleModel()
-        model.array_field = 'foo'
-        assert model.array_field[0] is 'foo'
+    model = ExampleModel()
+    model.array_field = 'foo'
+    assert model.array_field[0] is 'foo'
 
 ************
 Installation
@@ -141,11 +150,11 @@ Basic usage
     assert fb.alias_field is 3
     assert fb.alias1 is fb.alias_field
     assert fb.alias2 is fb.alias_field
-    
-Note:
------
 
-Look at tests for more examples
+
+.. note::
+
+    Look at tests for more examples
     
 
 *****************
diff --git a/dirty_models/models.py b/dirty_models/models.py
index 7d89514..9f7ef03 100644
--- a/dirty_models/models.py
+++ b/dirty_models/models.py
@@ -464,12 +464,13 @@ def reset_attr_by_path(self, field):
             else:
                 self.reset_field_value(field)
 
-    def get_structure(self):
+    @classmethod
+    def get_structure(cls):
         """
         Returns a dictionary with model field objects.
         :return: dict
         """
-        return self._structure.copy()
+        return cls._structure.copy()
 
 
 class BaseDynamicModel(BaseModel):
@@ -484,19 +485,6 @@ def __getattr__(self, name):
         except AttributeError:
             return self.get_field_value(name)
 
-    def __reduce__(self):
-        """
-        Reduce function to allow dumpable by pickle
-        """
-        return recover_model_from_data, (self.__class__, self.export_original_data(),
-                                         self.export_modified_data(), self.export_deleted_fields(),)
-
-    def copy(self):
-        """
-        Creates a copy of model
-        """
-        return self.__class__(data=self.export_data())
-
     def _get_field_type(self, key, value):
         """
         Helper to create field object based on value type
@@ -708,13 +696,13 @@ def get_validated_object(self, field_type, value):
         else:
             return None
 
-    def get_structure(self):
+    def get_current_structure(self):
         """
         Returns a dictionary with model field objects.
         :return: dict
         """
 
-        struct = super(FastDynamicModel, self).get_structure()
+        struct = self.__class__.get_structure()
         struct.update(self._field_types)
         return struct
 
diff --git a/docs/dirty_models.rst b/docs/dirty_models.rst
index e67e9b7..6748796 100644
--- a/docs/dirty_models.rst
+++ b/docs/dirty_models.rst
@@ -4,32 +4,32 @@ Dirty Models package
 Main submodules to be used from Dirty Models.
 
 Models module
---------------------------
+-------------
 
 .. automodule:: dirty_models.models
-    :members:
-    :show-inheritance:
-    
+:members:
+        :show-inheritance:
+
 Fields module
---------------------------
+-------------
 
 .. automodule:: dirty_models.fields
-    :members:
-    :show-inheritance:
-    
+:members:
+        :show-inheritance:
+
 Base module
-------------------------
+-----------
 
 .. automodule:: dirty_models.base
-    :members:
-    :show-inheritance:
+:members:
+        :show-inheritance:
 
 Inner model types module
--------------------------------
+------------------------
 
 .. automodule:: dirty_models.model_types
-    :members:
-    :show-inheritance:
+:members:
+        :show-inheritance:
 
 
 
diff --git a/requirements-docs.txt b/requirements-docs.txt
new file mode 100644
index 0000000..c72c2a9
--- /dev/null
+++ b/requirements-docs.txt
@@ -0,0 +1,3 @@
+sphinx
+python-dateutil
+iso8601
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..e69de29
diff --git a/setup.py b/setup.py
index 17b097d..92fd99c 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
     name='dirty-models',
     url='https://github.com/alfred82santa/dirty-models',
     author='alfred82santa',
-    version='0.5.1',
+    version='0.5.2',
     author_email='alfred82santa@gmail.com',
     classifiers=[
         'Intended Audience :: Developers',
diff --git a/tests/dirty_models/tests_models.py b/tests/dirty_models/tests_models.py
index 64f8281..f7e2075 100644
--- a/tests/dirty_models/tests_models.py
+++ b/tests/dirty_models/tests_models.py
@@ -1118,7 +1118,7 @@ def test_get_structure(self):
         self.model.testField1 = 'aaaa'
         self.model.testField2 = 1
 
-        s = self.model.get_structure()
+        s = self.model.get_current_structure()
 
         self.assertIn('testField1', s)
         self.assertIsInstance(s['testField1'], StringField)