Your comment doesn't really make sense. Though, if you're trying to say that you want to tell the "artist" that you want to "use his art" on a sweater, then commenting here won't do it.A_Commenter said:
I can comment now. Just in time to tell the author that I'm going to turn him into a sweater.
You'll have to contact him on his pixiv or twitter accounts. And keep in mind that the artist is Japanese and may not speak much English.