Hey CombatModder-
Modding is hard, and you will improve as you practice. Have you ever thought of trying out some filters? They can be used for making patterns, camos, or any other type of designs you can think of. I personally think they are good for making great mods!
Also, try using some gradient maps (layer adjustment) and if you do, be sure to overlay it. Play with the opacity aswell.
You'll have a fabulous mod in no time