Simply reduce the layer opacity and use blending modes and move the layers around until they line up, then set the layer back to full opacity and Normal blending.
Thank you for your answer.
I used to play with the layer opacity and move it to line up the layers.I used Ps in french and i don't really understandnd the blending mode.Is it in the layer "fusion" mode or the pencil mode?
And if it's the layers mode,wich blending mode can i use to have the same colors and shape.
Sorry if i'm a little bit difficult to understand but it's a really specific ask from clients and i really have some problems to solve it