I think I know why. It’s because separated the hand in 2 parts to create some effect then I merged them together. The effect that I wanted to create has disapeared. And I didnt notice it! The question is why the effect has disapeared???
This is the hand without the effect: Here
I succeeded to make that effect: effect
I soon as I merge them with CTRL J, it creates problems
This is the unmurged version: unmerged
