In my opinion i think it's better to wait but if you're eager to do so then it's up to you as well.
Eclipse33 is already a member and he has purchased a copper rank. Those newbie restrictions don't apply to him.
Yeah, I thought there is such a thing as this on a purchased copper member account. Anyway, from what I have understand in the thread created by Theymos, your level of freedom as per restrictions wasn't clearly stated but, I think uploading avatars isn't one of them.
Here Is a quick and simple guide for you to upload an avatar or signature on your account should it display this way. Mind you, should it not, it imples a restriction which could only oepn in course of attaining higher ranks.
Firstly, you click on your profile, then you click on forum profile information, then you would see in board Avatar and a blue write up that says, 'go here'. You tap on it and then you would see a browse file. Click on it and you would be directed to your devices media to search for desired avatar. Note, avatar of size 120 × 80 is desirable and of at most 80kb otherwise, its most likely not to display even. After selection, you upload and its done. You've just got to wait a while for it to display.
Here's an image on what your likely to encounter:
1.
2.
3.
Hope this helps!