That looks really cool. I love the idea and the colors are really nice. The lighting is a bit auestionable in some places in terms of angle, but it's nice overall. Really cool how you provided the sense of scale with the guy. Nice framing as well. The texture on the rock the guy is standing on is really detailed and looks hard for sure. The shape feels unsatisfying to me forfor some reason, but that's not really your fault.
For yoyr first time attempting a new technique, this was great! Very detailed and good-looking. Keep it up!

You did great!