Here is how I constructed my collar for my Yoh cosplay ^^ Look around to find a couple of pics.
How to make the collar is a very common question among DW cosplayers. Its not the easiest shape to construct so here is my method.
I had to make one for a friend so I made a tutorial while making the second one. I gave it to her before I could photograph the final step so the last 2 were from my own. Mine was made in a bit of a rush so its not quiiite as neat and has been worn a few times so I may need to consider repairs very soon ^^ Plus some peeps visiting my house last week broke the velcro off despite distinctly telling them to be careful ¬_¬
Just a quick work of warning, some glues make polystyrene melt so you might wanna test a little bit on some scrap first. Uhu glue is one of them as I found out 0_0 I have used Loctite super glue for both and it works a treat!
Feel free to use and send to friends ^^ Let me know if you are gonna put it online somewhere.