Unfortunately, until you receive member status, you aren’t allowed to enter the photo contest. By posting questions, answers, or sharing pics of your cham, you will soon get this status (possibly by the start of next month’s contest!).
This rule is in place to prevent spammers and trolls. In the meantime, you can check out the current contest, which this month is dedicated to highlighting uncommon species. (If you have a veiled, you wouldn’t be able to enter anyways)
However, welcome to the forums! I hope to see your entry next month!