Any suggestions on how to monetize? 1) We are taking a percentage of the pattern sales 2) For who want don't need help selling, we change a monthly fee 3) Subs

Any suggestions on how to monetize? 1) We are taking a percentage of the pattern sales 2) For who want don't need help selling, we change a monthly fee 3) Subscription for users to create patterns Questions 1) How much money can I make off of advertising?