I thinky ou should show that the couple are getting ready to gamble.. right now it looks like a apir of heads floating.

I think I've seen this in a wedding album somewhere!!!
But, I agree with Ponti.

I also agree with ponti here. So maybe you could work on it a little bit more. And don't forget to mention your source for the couple. In case it is your picture, you have to upload an uncut version in your SBS. Good luck

I'm really (really) new, I don't know how to edit this to upload my original images... any help?

Of course Have a look at this link here:
http://www.pxleyes.com/blog/2009/07/how-to-participate-in-pxleyes-photoshop-contests/
That should help you
Basically it's just the following: "My stuff" - "my contests" - "add step 1 to guide" and upload your picture.
You can see that in step 7 and 5

We all gotta start some where... and good luck!!!