Looking good but I hope you can take some slight criticism from me. They all look too "Gmod'dy", try some light photoshopping, maybe less contrast or higher saturation. Try it like this one, managed to find you here in the comments aswell
This one looks neat as a example.
I haven't done scene builds like these in Garry's Mod in ages, this might even be in SFM which would even better to work with.