Per the art market rules you're allowed one type of art topic at a time, i.e. one selling, one buying, but not two of the same type.
Quote
You are allowed one type of topic (selling/buying) open at a time. This applies to the main Art Market board AND each of the individual Art Market subforums.</p>
<p>For example: you can have one open selling topic and one open buying topic in the main Art Market board, but you cannot have two open selling topics in that same area. Even if you are selling different types of artwork (i.e. hand drawn art and handcrafted jewelry), you are only allowed one open selling topic at a time. However, if your open topic reaches the second page, you can request to have it locked and re-post it again after it has been locked.
.
I've linked the portion of the art market rules where it's posted. Since you have an existing commissions topic selling artwork directly below this topic, I'll go ahead and lock this one.
Once the original topic has reached the second page and has been locked, feel free to open another one.