You cant post here yet, LM.
And that is because you need atleast 10k points to post in this specific stream and a few others.
You can however still post in other streams such as MEMES_OVERLOAD and Post-for-points to earn points to eventually get posting.
Also, please do notice, I do recommend that whenever you pass by a stream, try giving its stream rules a read, they're useful so you know what you are allowed to post and not.