Well, this might seem a little juvenile, if you're not familiar with it. But in the US, there's sort of a fad for adults, usually women, to gather in social groups and.....color. Like with crayons, in coloring books, like when you were a child. Although I think they typically use either markers or colored pencils. I just saw an "info-mercial" selling adult coloring books, on tv! The adult designs are not the pron kind, but usually abstract, geometric, or nature designs. Not cartoon characters like in children's coloring books.
Anyway, it strikes me that at least some of your drawings would be perfect for that. I had an idea to put together some of these coloring books using drawings made with Inkscape, and donate the profits to the Inkscape project. I've started making a collection of drawings, and intend to look up some web groups on this subject (just google "adult coloring books" to see examples), and figure out where they get them. Mostly I think they buy real paperback booklets, but I think there's some available for download. So at the very least, I could offer them for download from my site (
http://forum.inkscapecommunity.com/index.php)
Your drawings are so good, I imagine they would sell right away! Who knows, maybe you could be a coloring book cult guru, lol. Just joking. But seriously, you could look into publishing a booklet, because your drawings are so good.
My drawings are pretty weak. I'm not reallly a sketch artist (I don't use a tablet). But Inkscape is great for abstract/geometric designs. So I thought, what the heck -- I really enjoy making abstract geometric designs, pattern borders, and such.
Anyway, sorry for rambling. Thanks for the offer for a print. I love the drawings, but don't have any thoughts for printing one. (I couldn't put on a wall because I live in apartment. Plus it's very small apartment and the wall space is mostly full by now.) (I'm about to turn 60, yikes!) OH! I'm a member of DA, although I've never uploaded anything. But you could be my first "fav" or "like" or "watcher" , or whatever they call it. Now where did I put that password.....

Back to Inkscape for a moment. You must know all the tricks for avoiding performance issues. I imagine those drawings are fairly node-heavy? Or maybe you convert to PNG, as you work along? (Edit menu > Make a Bitmap Copy)?