Looks like woodprinting or something done via screenprinting. It has artistic value, but I see it being used more as an illustration. Reminds me of Edward Gorey. You have a definite artistic style, and you might be able to market drawings like this as illustrations for magazines, website articles, and the like. Only suggestion I can make is to slightly lighten the background. Everything else, I like. Oh, consider doing the same art piece, but turning it rube goldberg like, or inserting hieronymus bosch type oddities. The criticisms I'm seeing in this thread about it not being a typical art piece might vanish. Intricate drawings with humor I think are awesome. Oh, another thing: it's a bit difficult to differentiate between the objects and the background. Do something to separate background from foreground, if just by thickening the objects border.
Thanks for the input! Looking up Edward gorey now I can see exactly what you mean, also it seems he drew a bookshelf in this exact style while illustraing for HP. Lovecraft stories (Which are definitely inspiration for me too) , so now I feel like I've somehow ripped him off! I get exactly what you mean about objects blending into the background, at times I wish I could take away with my pen as well as add to an image. I've been experimenting with different line thicknesses because I usually stick to one uniform thickness which is boring and awkward.
Ever tried using one of those pencil sets that have black charcoal pencil, a white pencil, and you can draw on colored paper, and use the white pencil for highlights? Seems the kind of thing that might work well with your visual style. Would probably need one of the harder pencils, though, way up on the H scale. And I think last time I went to an art store they made pens that could actually write white on dark paper.