UGH! This was such a headache....
So, I was working on this on gimp (I drew the lineart traditionally), and I was nearly finished. I had downloaded brushes for it while I was working on it, and I has suddenly decided that I wanted to refresh the brushes instead of saving and closing-reopening the program. But it froze and the error report popped up. And I lost. IT ALL.
So it took me another couple of hours (not as long as the first time. I actually knew moreover what I was doing the second time than the first...) to finish.
So.... I hope you all like it. :)