You'll have to get to 20 reaction points and get at least 1 post somewhere (not discussion threads) to be able to post it yourself. See here.
I tried to help get you to 20 reaction points, but you still need more; others will have to react. Then you will also have to post somewhere where you are allowed to that counts.
Or you can send it to someone for them to post. Or you could post a link to it here in the discussion thread.