Tips and tricks! Go to the ‘how-to’ section and check out masking. Masking weapons to hands makes it look like the hands are holding the weapons and not just hovering in front of them.
2nd: Backgrounds /shapes item–last shaded circle, color 1 and 3 to 0%–for shadows, fades, lighting.
Experiment with color and those two and you’re well on your way to knowing everything I know.