First Render - Brütal Legend Guitar

I’ve played around with Blender before, but this is my first time making something from scratch. I used some tutorials, and even got some help on here. It’s a “realistic” version of Clementine from the game Brütal Legend. Let me know what I could improve on!

HDR from
Textures created with Substance Designer, Photoshop, and Waifu2x
Rendered in Cycles, 500 samples, 73K verts

For reference, here’s the original: