To enter or not to enter?

Smithsonian has a photo contest they do every year. There are a number of categories to enter. You can enter up to 15 photos per with a total of 90 photos. I'm wondering if I should enter. My problem is, I either think too highly or too lowly of my work. When it comes to something like this and looking through the previous years' winners, I feel not good enough. http://www.smithsonianmag.com/photocontest/p...

On top of that, I'm not even sure which ones to pick, or if I should try to go out and take some just for this occasion. I wanted to see if anyone would be willing to help me figure out said problems. As my taste is apparently different from everyone else. It tends to happen that I think certain photos of mine are a lot nicer than the ones that people tend to like.

Most of my photos can be found at my flickr account if you are interested. https://www.flickr.com/photos/king_ri...

There are a few of those recent ones that I have tweaked a little on my tumblr as well. http://bigdickinthewindycity.tumblr.com/

(Don't be alarmed by the name, it is totally safe for work. Just a bit of a joke name)

If you are interested in the contest as well, you can read about it here http://www.smithsonianmag.com/photocontest/s...

The rules are here http://www.smithsonianmag.com/photocontest/r...

And the FAQ http://www.smithsonianmag.com/photocontest/f...

Thanks in advance for any help! And good luck if you choose to enter.