Wow !!! The first thing I can already said, is that this shot is not common at all ! The hedgehog was added after with Photoshop or is it a real photograph ?
Anyway, this has a really strong impact (in all cases for me). The little hedgehog seems to be in danger, and this is emphasized by the fact he's "in ball", and that you made the eyes darker.
The woman obviously seems to protect him (of what danger exactly ? I would love to know what you had in mind when you create this ).
The model has also a really great expression, this is breathtaking !
Congratulations and keep up that great work !