After quite a few hours on a drawing I felt it was done and thought I'd email it to myself to have a copy on my phone, but whenever I send it to an outside source(regardless pic/file type) it greatly darkens the file to the point of you only see black basically. It's not just my email either, no matter how or where I send it it is still dark but it is not displayed as dark on my computer screen. Screen brightness is also not the problem, everything else on this computer appears as-is on every other device.

Is it a glitch in the save (Which I have tried many times and in different formats)? Can it be fixed without the sacrifice of my precious art?