Dont worry. Your profile pic is good, if you can put more pictures.

I'd say, tell people a little more about yourself, but try to do it in a way that stands out from the rest of the crowd a bit. I know it can be hard, but take time and really put some effort in it. If you do, you just might get more interesting replies.

Also, make sure you post something that people who want to write to you has something to respond too. I mean how can you start a communication with someone when you have nothing to talk about or ask about. I call this a hook, sort of speak.

Anyways, hope this helps.