If I was going to recreate the plaid, I'd go with sewing. Paint can be difficult to control [Depending on the line thickness], and doesn't have the same look or feel as something sewn on.
Next con: Nekocon
What I am working on:
(New)Wicked Lady - Sailor Moon
(New)Ben Paul - The Walking Dead Game
(Fixing)Belarus - Hetalia
(Fixing)Wildcat - JKMM
(Fixing) Ibuki Mioda - Super Dangan Ronpa 2