I really wish there was an easy way for me to turn my spritesheets into gifs so I can test the animation when I'm working on them... I have to go thru EZGif and import the spritesheet, split it into frames, and then manually copy and drag frames into a 1-2-3-2-1-2-3, 4-5-6-5-4-5-6, etc. pattern. It's so time consuming. :/
There's actually an 'import sprite sheet' function that streamlines the process - you just set the cell/frame sizes for x/y to whatever you're using, and then you should be able to crank out some animations rather quickly.