Please help me with the character creator from the MODTool

[venr vals]

Here's the thing, I'm not at all tech savy. Or at least not enough to know how pixels translates to centimiters (or inches, I guess, whatever you're more familiar with). Can someone please tell me the conversion of the file sizes I need to make a character of my own?

I'll remind you the pixel meassurements the game gives us:

568w x 1080h for the body
760w x 1080h also for the body
512 x 512 for the text icon

I would be very grateful. Google asks me stuff I don't understand to help me make the conversion myself, and my game gets incredibly slow when I want upload images to it so I think trying different files until I find the size would take me hours. Please help.