King metamorphosis cosplay help:D

[The EverFree Pony 64]

Hey guys am a big queen chrysalis fan so i wanted to do her gender bend for a anime con am going to soon i would like your input on how i should make the crown were i could find a good place to buy the kind of wig in the pic of him and boots:D also if anypony knows were to get good dark green contacts that would be nice too.ps how do i get too look that pale?  also any other tips on pulling this cosplay off would be nice