Body posture is realy good and the colors are really good. I like the red and the blue a lot.
I feels like this piece could benefit from a lot of polish. The actual arm of the skeleton looks a little bit goofy.
I'd definitely work on this a bit more if I were you!
Digging the clusters and colours. It would be great to see a more polished version.
Thanks for the feedback and I agree, it's just a rough sketch. Was attempting a different style here and had a lot of fun.