Some interesting comments here; I too saw the Soul Taker (I think that is what he wishes to be called) thread and commented therein.
For me there are a few fundamentals;
1. Unless it's great, original or has a new angle, don't try to sell it.
2. Web presence is key; and that is whole new and very big topic, what with promotion, refreshing content, staying competitive, incentives, updates...
3. The payment side does require a credit card. For some younger creators that could be an issue, but sometimes, oddly, adults can be supportive if they are invited to help.
There is a number four.
Don't give up.
Ever.
There is no pain you are receding, A distant ship's smoke on the horizon
You are the only coming through in waves