I was thrown off by having to use "take", since I'm more used to writing "get" for taking objects in these games. In general implementing the common synonyms may be handy (examine as well as look etc) as well as there's some common single letter abbreviations (like the directions IJ mentioned above but also like x for examine). I also noticed the mention of the door disappeared from the room description once I'd started doing things like using the hammer to break the window or the mirror - guessing this is an oversight?
Otherwise I'd second the feedback Internet Janitor mentioned. I'm guessing also there'll be some sort of "I don't know that word" messages for unknown commands in future?