This is the Tutorial I made for my Nightfall picture. D: I was going to clean up the text a little more, but I'm hoping you guys will get my point.

Uhh... I'd say fullview this, but keeping it as a thumbnail seems pretty irrational D:.

Umn... A couple things to know about spraycan pictures I couldn't fit in here:
-MAKE THEM BIG. I mean, as big as you can possibly get your canvas within comfort. They look so much better that way, even though the initial layers are tedious work.
-Standard= The colors you have in that little bar when you open a new canvas. Just so no one's confused.
-Remember what colors you're using! I know it sounds stupid, but sometimes when I'm coloring with the erasor trick, I'll end up having to erase the work I've done so far and I won't remember what colors I replaced with the erasor tool. Like... Did I replace the light-red with the medium-blue or the dark-blue? D: It gets to be a problem.
-Here's the link to Yuliya's guide: [link] . If you still can't figure the erasor trick out after that, just note me and I'll try to explain it a little better.

:3 Hope this helps someone! I might make a guide about how to shade with spraycan (Since this really only covers backgrounds) but it'll be quite a while.

Art (c) Kittybuckets.