1.) Be active on the forums, and link your comic in relevant threads. Updated with a new page/episode? Post in the "Post your latest page!"-thread! Are you in a thread discussing the villains in our comic? Link to your comic when you talk about it! Also, put a link to your comic in your forum-profile - Tapastic doesn't do this automatically, so you have to do it yourself. I see you've already done this - that's great!
2.) Update as regularly, and as frequently, as you can manage. The more often you update, the more often your comic appears in the Fresh-section - and the more opportunities people will have to discover it by accident.
3.) Promote your comic via social media/other sites than Tapastic. I use Twitter and Tumblr, but if you've got facebook, use that too. Don't be shy about promoting yourself via your own social media accounts - try not to be spammy about it, but in the end, it is YOUR social media. Use it.
4.) I just had a look at your comic, and you started updating 2 days ago. Of all three of your comics, the oldest one is 6 days ago. That's practically nothing! People just haven't had the time to check out your comic! Take a deep breath and be patient. Building an audience takes time and effort.
5.) Try to let go of the negative attitude. I know what it feels like to post things and get only crickets chirping in return - but being negative, and especially writing things like this:
... does NOT inspire any urge in me to read your story. You come off as a little bit arrogant there, which is hardly an attractive thing to potential new readers. If this is an attitude you take with you elsewhere, that in itself might be hindering you.
And, to reiterate, you've been posting for a week. In terms of building an audience, you've barely even started. Be patient and work hard, and you will get more readers, I promise.
