Help Me Sculpt a Cat?

I've been working on a 3D model/sculpt of a cat but I feel like it just doesn't look right - like something's missing/off. Is there somewhere/someone I can send it to who can help me? I want someone to take a look at it and help me revise/edit the model to get it right.

This is my first attempt at modelling and I used Blender for it. Any help/advice would be greatly appreciated! I really want this cat to look realistic and I want to print it to make a portrait model of my friend's cat (I will paint the printed figure).

Thanks in advance!