Tileset Pixel Art

 I've been working on some art assets for someone on Scratch, more specifically a tileset. Tilesets are little snippets of ground that the game maker can make a whole ton of and stick in a grid to build a world, and is common because it's so easy to customize. The one I've been working on is a work in progress but here's what I've come up with so far. 

This is a rock tile. I think for improvements I'll tidy up some of the bumpy parts and make the huge rocks in the center separate smaller ones. Here's what it looks like together. 

I also messed around in making a grass tile, which is going to change a lot.