These aren't yukkuris. They're dangos.
Could I suggest getting some graphics software?For example GIMP...
I don't have a tablet and I'm not very good at mouse-drawing...
But you could clean up the scans. (Adjust contrast, resolution, rotate and crop to size.)
Of course I could, but I'm a lazy bum.
I didn't notice until now, but what the fuck is that black stuff in the upper-right corner?
Some dirt, too lazy to remove it.
Do not want your art. It's awful.
just draw more of them , it will be better.but something at the upper-right corner?