What is the proper way to create a custom control inheriting Form.View

What is the proper way to create a custom control that does not extend a currently implemented controls and instead extends Xamarin.Form.View.

I need to create a custom animated check box control. and started by creating a new control and inhering from Xamarin.Form.View. Added a few properties and started to create android implementation by creating a new renderer and inheriting from NativeRenderer. For here on, I don't see a proper way to create the renderer for my custom control.