I kinda on the same boat as you but once I started to work on my webcomic for myself than others, things changed.
First off, if you're gonna use the tapas forums, I think you should put the link to the tapas version of your webcom in your BIO, or both.
Secondly, appeal works. A nice profile pic and a name can go a long way. This seems important for people for some reason.
Third, promote and be nice. Everyone is gonna promote but "being nice" is very marketable.