I like the crystallish texture of the rock edges.

 I would say leave the pallet out, it's a bit distracting, that, and as artists if we did make an edit, we can rely on the colours already in the image. As far as critique goes, probably could use more contrast, as all of the colours together through off a bit of a desaturated look.

The shape of the rock texture has a good readability, nice "minimalistic approach" :)

To add some variations to the platform, you could add other spots with rock textures on the front - in order to avoid too large empty zones

 Thanks, can you see anything that you think needs improvement?

 This is definitely easier on the eyes than the other tiles you've made. I prefer these kind of tiles in games for readability.

The blue background is the colour of the background if I were to place it in game and the default pixel joint background is way too dark to show the pixeling of the rocks in this peice.