I used to draw pictures that fit nicely into sets of notecards, which then sold very well both retail and wholesale. I still do a few cards, but the market just isn’t as big. In fact, it is microscopic. Tell me, how many cards, thank yous and little notes do you send a year? How many do you receive? Hmmmm, really have to think about that one. Cards do sell, but not very many anymore. (Despite the handiness of communicating via computer, the truth is, no one ever cherished an email, so there.)
In addition, I drew cabins and homes on a commission basis. (still do!) That was the sum total of my abilities in the early years, and it kept me quite busy.