Why don't you track down an artist online who is keen for a collaboration? Write something short, get them to draw it, see how it comes out. What's to lose?
My thoughts upon reading this suggestion were along the lines of RedWombat's.
It's not impossible or a completely bad idea to find someone to work with, but it depends what you're looking for. There are forums where writers and artists will collaborate for fun and practice, but because it just for fun there's no real guarantee you'll have a finished product. One or the other may bow out at any time. In fact, you may very well end up frustrated. Moreover, while it may be valuable experience in the process of comic creation, the quality may not be what you'd be able to sell. The majority of more skilled and experienced artists will want to be paid.
When I was heavily involved in webcomics, we generally advised creators to learn to draw, because the artists were so rare and could be so choosy.
Definitely. Even if they don't become great at it, writers who learn to draw tend to have a better understanding of the process and problems, in my opinion. It's horribly frustrating for an artist to also be expected to be teacher -- being asked by a client how to format for print, how to submit to publishers, how to letter, etc. -- as well.
Artists usually can only juggle a couple projects at the same time; drafts, pencils, edits, inks and colors/toning takes a lot of time. In contrast, I can think of a few comic writers off the top of my head who are working on four or five titles with four or five different artists. That's not to say writers have it "easier" or they're less important, but an artist's work is more physically intensive and has to be done at home or in their studio. Consequently, it's been my observation artists prefer to work with established names -- not necessarily "big" names -- or with people who've been recommended by other writers or artists. In other words, with people who are part of the community.