The scale of the modeling looks very good. The toy figures are a nice touch. Lighting changes could minimize the clean look. I would light the scene with the Lava lamp and monitor glow.
The composition of the scene draws attention to the bare space on the wall. Scuff marks there from the char might add realism and balance to the scene.
I think it is pretty strong technically, but there is no story. It’s sterile. Where is the emotion? The feelings that come to mind when I think of my workspace are: The ahaa moments, the sublime God-like feelings of the power of 3D work itself and the abject frustration when nothing is working out. I don’t feel any of those looking at your scene.
It is a strong foundation, blow some life into it. There have been many wonderful workshop still-lifes done in various media. I think it’s worth building on; keep working.