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: Anime Mid-Atlantic
What I am working on:
(New)Bubble Head Nurse - Silent Hill 2
(New)Ibuki Mioda (Despair Disease) - Super Dangan Ronpa 2
(New)Maki Nishikino (Happy Maker) - Love Live!
(New)Utena Tenjou - Revolutionary Girl Utena