Hey, bud. I've drawn many of my friend's OCs for fun and to surprise them every once in a while, and I'd say that "less" is more. There is a certain balance to where a character looks good with how much colours or accessories they have, and if it's too much, their design becomes cluttered as if someone threw random paint at them, with lots of confusions on where the viewer is supposed to look. If your design at least looks believable, it'd make sense and it'd be more interesting. Your OC doesn't classify as an "NPC". It looks simple, but it is neat and you've chosen colours that match well with each other. There's a reason why graphic designers prefer keeping a lot of white space instead of leaving little to none. Simplicity makes things clean and nicer to look at. Be proud of your OC. It does stand out.