That would certainly be useful to me even at a higher specialized price. I've only modified existing ones and I haaaaaate it so much because I waste so much time thinking about what to do next.
I like my instructions to be straightforward. I don't "get" sewing well enough to work off the cuff.
Plays With String knitting/crochet commissions
Next conventions: Otakon, Anime Weekend Atlanta
Currently working on (commission): "Companion Cube" [custom] Mabel Pines (Gravity Falls)
Currently working on (personal): Fem!Pacha (The Emperor's New Groove), Spidermom ver. 3 (Homestuck)