Here we have Scootaloo in her true form in my AU. Here is also an example of a changeling-pegasus hybrid from my AU. She doesn't have her Cutie Mark because I haven't decided on it yet. She's also capable of flight now that she's learned she isn't a pure pegasus (she shifted into it at such a long age she forgot she had done so) and so isn't using her changeling powers subconciously to keep her wings small. Her realizing that means she can also move past trying to fly like a changeling with pegasus wings.
Art is by the wonderful PC012 at Deviantart.