Free to use!
Wanted to make a ground/drill pattern. I didn't test it to make sure it repeats well. Free for personal use. No credit is necessary. Just never claim to have drawn something that you didn't draw.
Inspired by ground-type Pokemon, but I don't own Pokemon. Guess you can call it Fan Art.
You do not have to credit me, but I would really appreciated it if you did. (Please!) Haha.