Here's how I make my squiggle animations using Gimp 2.6!
Gimp is free to download, you can download version 2.8 here: www.gimp.org/downloads/I'm using an older Gimp though, so the layout or buttons may differ some. (I don't like updating much!)
I can't believe this took me hours to make, I really hope it's helpful! Sorry I don't have more time to make it pretty, but at least it's neat and organized. I did my best to explain it from a beginner's viewpoint, but you may still need to study Gimp a little.
This is also how I make my animated icons, it's a very simple process, just do a little experimenting and you'll get the hang of it.
Good luck and please let me know if this guide has helped you!
Check out my P2U premade squiggle linearts! More here: sarilain.deviantart.com/galler…Click for Commission Information!
Artwork ©2014 Sarilain
Do NOT steal, redistribute, or copy any of my art, designs, or characters.