Although, I'm not there yet, and I'm learning as I go... but here are some thoughts.
Texas Photographic Society website is a great resource for call to entry.
http://www.texasphoto.org/ and Mary Virginia Swanson's blog,
http://marketingphotos.wordpress.com/Another thing to do, sign up for some regional portfolio review events. We have two each spring in the Boston area at the Griffin Museum and the Photographic Resource center. If nothing else, you will get some good (and some not so good) feedback on your work.
You need to develop a thick skin, and get used to rejection.
Lastly, I pulled my most recent portfolio together when my local public library offered me a solo show in their gallery. It was time consuming and expensive to get all the prints ready and framed, but now I have a show that I can "market" to other venues and galleries. So, my show is currently on view at a library two towns down the road, I've juried into a solo show in NYC at the Camera Club in October.. totally shocked about that.. thought it would be the usual rejection!!
And one of the portfolio reviews has landed me a schedule slot this winter at one of the Griffin Museum's galleries.
It's been a lot of hard work over this past year to get it out... good luck!! (Also.. there is an annual juried show for alternative processes somewhere... soho photo maybe??? )