Voting is restored back to 5000 every 24 hours or so.
In order to become an "Official Artist", you have to have been here awhile, have many graphics & also support from the community.
No birth dates can't be hidden & don't think it will be a feature to use in the future, I know it's never been since I've been a member & I've been here over 6 years, as far as if embedding or modifying codes are concerned, I'm pretty sure that's not allowed either, but to be sure, I suggest you contact email@example.com, they will know for sure, & should also be able to answer any additional questions that you may have. I would also recommend reading the GG's Terms of Service when you get a chance to help familiarize yourself a little more with the expectations of the site, hope that helps & your welcome, thanks for asking :)
Also, anything with text, goes under glitter text & what it describes, with a few exceptions, such as birthday or christmas, which would go under seasonal, unless it has a name added, which in case it would always then go under glitter text/personal, hope that helps :)
One of your last graphics was in the wrong category, the "Hi love" one, goes under glitter text/greetings & the last one with the "S***" word has been rejected, as no foul language is allowed here anymore at GG. If you have any questions, feel free to contact myself or any other mod here.