This is not something anyone should use for final texture for an in-game asset, it's just to show UVs and textures at the same time for a clean presentation. :) Here's an awesome example! It's clean, shows the use of UV space, and it's easier to read.
Deadlines always help I find. I'm liking your colors. I would say though that you need more contrast, especially if you're painting in the lighting. I also don't see any cast shadows, only a bit of ambient occlusion. For example I'd expect the shovels on the wall to give off a drop shadow. Also around the picture frames…
These are great, loving the style you've got going on! The monster lockbox could use varying line weights, for example around the teeth the shading is very even, which tends to flatten it out. Experiment with thinner weight at the tooth roots, vs. thicker weight at the tooth tips, or vice versa. For the grass, look into…