That's a nice first start! - No one ever said greebles were easy, we're just insane
I like the style of this, a sort of hand crafted wood chair with technology elements, but again, with a plant like theme. It reminds me of something, I can't quite place, but either way, it's going to be excellent, if you can finish it in time!
You're tree-branch/wire assemblies are going to be a huge pain... or really easy, depending on your software, and how fast you get a handle on it!
I like the screen concepts too - the sketches are pretty nice.. Maybe for your final visual, have an overlaid pencil sketch of the operator, that could look very effective, and compliment the subject matter (the jusxtaposition of technical and hand crafted artisanry, against CG and hand drawn elements).