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 these or wil complain that they aren't 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!
Eheee they look so pretty in rl!
(sorry about the mug-shot) Oh the finished result of the cosplay is here: [link]
The link to the tiara tutorial is here!:[link]
And the troll horns tutorial is found here!: [link]
Feferi - Homestuck 
`anmari has been spreading her infectious positivity throughout our community for over 6 years. Throughout this time Ana has been at the core of all things devious, passionately developing an eclectic gallery, helping organise devmeets, participating in chat events and also recently completed dedicating her time as a Community Volunteer. We are absolutely delighted to bestow the Deviousness Award for May 2013 to `anmari, congratulations! Read More
Sta.sh
cosplay XD