TBH I'm not the guy to ask since I'm pretty bad at it since im sub 98 iq, but Ill try my best to answer
<convincing
Eh, if you're talking about real life equivalent it's a bit messy, so Ill go on about colors first
You don't need to have a good eye on how to make camos look good, hell I don't even know the basics of color theory but I can tell what looks ugly from what looks somewhat aesthetically pleasing
For example
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Look at this shit, no comment. BUT it was in display by a real army so thats that, it looks like shit but it was manufactured by the army.
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Here's another thing by that same country, it copies flecktarn but the color palette makes it golden, creme de la cob.
But yeah enough of that rambling, if you meant convincing as in like Military stuff, you don't need to go that over the top, keep it simple and nice, commercial market camo patterns go over the top because they design stuff for general fashion and daily use, not combat or activities that require protection
stuff like this
View attachment 10733
This is not convincing army camo, keep it toned down and where it makes sense.
Russians (specifically FSB and OMON units) get away with flashy camos like blue in their camos because of the locations/standardization of where it's being used and issued, police and swat.
View attachment 10734
(and because it looks cool + they're made for urban warfare or something)
In simple terms, make it simple, know where and when to use it (ei surroundings, locations etc), dont be afraid to copy real life examples, literally like every country in europe used/copied american/german camo, don't make it too digital, I mean like, don't do this
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If you're gonna do digital you should try studying MARPAT, EMR and MM-14 with the colors and shapes
If you want to study traditional camo try studying ERDL and the American Woodland, hell even African camos are pretty nice, Rhodesian stuff does it's stuff well
Try playing around with colors, I'm using paint.net but there are probably better apps like GIMP or SAI, hex color picker also works
I make my camo patterns with messing around with the noises, crystallization and other effects in Paint.Net, with the extensions from the forums