It's hard to judge where you're going without a picture, but I'll offer my advice and opinion as a fellow aspiring Mando. Fins seem generally do-able, but full-on mohawk scale protrusions do not appear to be common, or really a good idea in general. Although ultra awesome looking, features like the Rocketeer's fin and some of the crests you'll see on the helmets of The Mandalores in legends and video games are impractical for doing the business of fighting. Helmets are tools for keeping your head safe in a dangerous situation, and putting a giant handle on your head for an opponent to grab in close quarters is less than optimal. As a design element, I'd aim for something that reads as a reinforcing ridge with a bit of style, somewhere between LOTR Dwarven helmet ridge and Clone Trooper helmet fin. For a sleeker version, Din Djarin's helmet ridge would be a good example.
But, because I am not an official member, much less a part of the app team, your best bet for definitive feedback is to post your question with a picture of a mockup or sketch to the
Q&A section of the forum.
