Personally, I am glad to see that RMP as a whole has become much pickier about what they allow into the marketplace over the past couple years.  As a community of Poser artists, we as a whole are growing and changing and as a result we demand better and better products.  Look up the what's new page sometime and skip back to some of the furthest back pages.  In general there was nowhere near the quality in products that far back as there is today.  Now look at this from the view of being a potential vendor.  Your products need to meet or exceed the quality that is being put out NOW.  You need to present your product in a way that FULLY shows the products best features and capabilites, as after all it is either accepted or rejected on those promos alone in the initial stages.

You also need to be prepared to deal with rejection.  This is hard to understand for most folks.  You post an image in the gallery here and you will be greeted with post after post of "gorgeous!"  "What a wonderful image!" "Superb! A+++"  I'm sorry, but that is not a critique, it is at best a-- kissing.  After hearing such comments time after time it deludes one into this sense that they are wonderful and can do no wrong.  And then they create a product, submit it, and then can't understand why it is rejected and feel bitter about it.

Rejection is not a bad thing.  As an artist you will pour your heart and soul into a creation, so understandably it feels very personal.  You need to learn that rejection of your work is not nearly as personal as it seems.  Rejection is something that you should use in a positive way to learn and grow as an artist.  For me personally, I have a group of great friends (huggles for all my TAC wenches) who are artists as well that I look to for criticism that know I expect nothing less than complete honesty.  I expect them to "make it hurt" when I ask them to look something over.  Seeing what is wrong with something I have done is the only way for me to learn how to make it better.  There is always room to learn and grow, and understanding this is the only way to become good at what you do, whether you want to become a vendor or just produce good art.