Slight counter-offer... No pressure to accept.
I already do fanart features for my comic with a little thumbnail of the creator's comic, plus the name and creator name, and then a clickable link in the description. Examples here:
If you do me one piece of fanart (any character), I'll include it in the next one. I'm coming up to the end of a chapter in a few weeks now.
Now, I have no problem if you choose to turn this down, or to prioritise people who have over 3k subs, since I'm currently sat just below that magic number at 2932, so I'll probably need at least month or two to be at the number you want. But that's my offer, and it's always open. People who participate usually pick up some subs, though to manage expectations, in the past I think it's mostly been an average of about 10.
