In addition to what others said....
Read the marketplace submission and other guidelins thoroughly. There's a lot of good info written on rendo pages.
Also, be patient, and listen to what the rendo staff are saying or asking you to do (if there is feedback on your product)
The hardest part can be being in tune with what customer trends are.

Also, your sales will not only depend on your product, but on how it's presented and what kind of reputation you're building. People feel more at ease buing something they want from someone with good reputation for product quality and customer service.

Hi, my namez: "NO, Bad Kitteh, NO!"  Whaz yurs?
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