I want my customers to be able to choose different skins for my EA

I want my customers to be able to choose diferent looks of My  EA  "Precison Scalper" in the inputs panel 

I have attatched examples of skins and my EA .

I want the grey areas to have the skins .  and the skins must not interfere or overlap any functions or buttons

the scale of the skins must look nice and not too zoomed out or zoomed in.

Please provide samples of work you have already done and answer this question 

whats 8+8?