Have not looked at your pricing, just some basic information on commissions.
If you are not already getting people asking "do you do commissions" then posting a journal that says you are doing commissions is not likely to generate any.
If you are looking for suggestions of things to draw, to expand your boundries (since you said it was not about points) then you could just open free requests. Or do a 100 things drawing challenge. You could also go to the projects forum and pick up things that people would like someone to draw for them and draw them.