Customising ships, any advice?

So I’ve managed to get a few X-wings second hand, but three of them are Wedge’s one and so they all have the big black mark on the right wing. I’m thinking I wanna try and remove that print or at least downsize it a bit but I’m not sure what I should use. I know with prints on things like Lego you can just use an eraser but I’m curious if anyone else has done anything like this before and if they have any recommendations about it? Thanks in advance