A few things
1. You need at least 4 submissions to be scouted.
2. Unless your art is absolutely spectacular, or you have scouted friends, you're probably not going to be scouted any time soon. Sorry.
3. Try to add a background to your submission(s)- they're much more eyecatching and you'll probably have a better chance of being scouted.
felten
Here: <a href="http://www.newgrounds.com/lit/faq/#ap_art_submissions">http://www.newgrounds.com/lit/faq/#ap _art_submissions</a>
Read the entire art section, it should be enough.