Rats, I trawled through the bickering only to find koromi beat me to it! Look at clockwork lemon's profile and you'll see he isn't American and therefore, spells some words differently. He also seems to be a fan of txt spk, which is brave, if nothing else.
Anyway, I'll give this level a try as it seems there hasn't actually been much real commentary or criticism on the level.
EDIT: Actually it seems I've already got version 4.2 installed. I enjoyed that version - the shift-maze area was the only area that kind of let it down. Playing through version 5.4, I can see some improvements, although the beginning of the 'Main' area still seems a bit messy with the signs and shift: it seems that Juni shifts to between the two signs, but sign A (the left one) should be seen first, then the right sign seen second. As the general flow is to the right, the sign order is a bit messy. That description was a bit convoluted - does that make sense?
It could be fixed by either moving sign A to be where Juni shifts to (the centre), or to move the shift destination to be where sign A is. I've attached a screenie to clarify (hope it's not considered spoileresque). Also note, there is too much text for sign A.
Overall, though, a pretty good level, especially for a first!