I've done a few of them through a club to which we belong. Under their umbrella we did quite well. I did one called a signature quilt for cancer and sold blocks and their names went into a drawing for the quilt. We raffled one off and made enough money to feed four families of four for an entire month plus Christmas dinner each with the trimmings. It can be done but better if you are a member of something. Get an organization to back you, unless you want it as a personal campaign. Then I don't know what to say. Having donated blocks helps with the work, again, an organization gives you a pool of people from which to draw. Bless you for your good heart and I pray your efforts are fullfilling.
Ruth