Hope you find this helpful! I'm not good at making tutorials so... uh... yeah
If you have any questions please don't hesitate to ask!
I get that some people won't like how I've done this or will complain that it's good quality but I personally think that cosplay (especially for something like homestuck) is down to personal opinion and I'm self taught at making things so I do tend to make it up as I go along! Oh the finished result of the cosplay is here: [link]
The tutorial for the fins are here!: [link]
And the troll horns tutorial is here!: [link]
Feferi - Homestuck