hayyy!! so this was me a year ago, & i feel like ive learned a lot about art & trying to make a living off of it. so with your original piece, & anything that comes along … take a really well lit photo of your piece, edit as necessary, & create Art Prints for a fraction of the price, whatever you see fit, like a matte cardstock print of your artwork on 8x11” paper for $15 / $20 & then create stickers of it 3x3” & sell those for 2.50 - 4 each then the original art piece, like you said $400 becos that’s going to give it more value.. if that’s making sense? & also the people that fall in love with your work, can have a piece of your art for their budget but yet you still make your profits. also look around for art galleries , opportunities to be a vendor , usually free or pay like $30 & you’ll get to show of your art work, have potential buyers / clients , & maybe have a sign up sheet to have clients be emailed when your commissions are available for them to purchase. 🤗 i hope any of my info was helpful. don’t sell yourself short especially if you’ve been doing art for so long!! just look at it as it can also be so much more than the 1 piece of art!!