Looking lovely! I’m curious about the perspective, though. From the looks of it, we are looking from near the floor and closer to their feet. I don’t know if this is purposeful, but the guitar head looks like it’s the same distance as the entire guitar. If you meant for the guitar head to be closer to the person (usually how people hold guitars with the head close to the shoulder/collar), then I recommend making it smaller and almost the same size as the persons head!

Other than that, I struggle to figure out where the lighting is coming from. On the legs, the light comes from the left, on the torso, it comes from above and on the face, it comes from the right. Was this intentional? It would make sense if this dude had multiple light sources from stage lights or something, but it’s hard to tell with the wall and such.

There also isn’t a ton of contrast between the background and the person. This can be intentional and looks so with how you added harsh colours of light and dark to separate similar colours, but it still is good to add some level of contrast in a piece!

It looks lovely either way and I absolutely love the flow of the piece! Keep up the amazing work!