Alright, got a load of new screenshots, and a few level changes.
Gallery link (http://img34.imageshack.us/gal.php?g=screen1xya.png)
And just for convenience...
(http://img34.imageshack.us/img34/3586/screen1xya.th.png) (http://img34.imageshack.us/i/screen1xya.png/)
(http://img38.imageshack.us/img38/1636/screen2rym.th.png) (http://img38.imageshack.us/i/screen2rym.png/)
(http://img522.imageshack.us/img522/4770/screen3l.th.png) (http://img522.imageshack.us/i/screen3l.png/)
(http://img205.imageshack.us/img205/530/screen4gsm.th.png) (http://img205.imageshack.us/i/screen4gsm.png/)
(http://img207.imageshack.us/img207/2863/screen5r.th.png) (http://img207.imageshack.us/i/screen5r.png/)
(http://img207.imageshack.us/img207/6496/screen6q.th.png) (http://img207.imageshack.us/i/screen6q.png/)
(http://img205.imageshack.us/img205/8900/screen7.th.png) (http://img205.imageshack.us/i/screen7.png/)
(http://img522.imageshack.us/img522/9537/screen8i.th.png) (http://img522.imageshack.us/i/screen8i.png/)
The most recent version so far's been uploaded to Knytt Levels (http://www.knyttlevels.com), so grab it (v0.4) there if you fancy trying what I've got so far.
Edit: Just so you all know, the last screen to the left is the one with a little water, and those.. rounded house things in the background. And yes, it is possible to climb up and into the screen above. In fact, there may just be someone living there..
You might be right... Surely this spoiler thing below will verify that..
Ding ding! I used "Tv" Sciences since, on Canon cameras, that's the "shutter speed" priority mode. Portal = Aperture Science. Shutter speed, aperture? A bit daft, but who really cares? :P