sell one painting to someone i don't know on eBay

i made my first art listing for a 30” x 24” painting i created 3 years ago wish me luck

but only to people who i know. people praise my paintings and i either sell or give them away. i want to sell a painting to someone that i do not know. i think my best bet would be to do a show (although i’m afraid of criticism- that’s another story), sell on etsy or ebay or possibly start networking and getting pictures up on my website. i hope to achieve this goal at least by the end of next year.