Strong Arm Free 3D model

I am begginer in sculpting and in this CGTrader, so sorry if I made any mistakes.

This contain .ZPR file, so you can do whatever you want to do with it, plus I don't know what format of file you guys need.
I think this is high-poly mesh( I might be wrong), it has no textures or colours.

If you want to help me you can tell me, in comments or in private conversation, what I am doing wrong or I don't know, I am open for any suggestions.

I hope you like my work.