Very creative game, I really enjoyed it a lot. The visuals and music are really good and unique. I enjoyed the narrative and the little bits of interaction - the poison/cooking stuff was cool, but I really enjoyed when typing tied into the narrative ("TELL HIM" and such), very cool idea.
I think the sketch artwork is fine, though I agree that keeping it consistent would be good. Maybe since you only had time to fully complete a few of them, those could have been in the "extras" section? I'd be very interested to see where this game could evolve to if time constraints were no longer an issue. I think there is a lot of potential!
P.S., I seem to be in the minority, but it felt like the button prompts in the cutscenes were pretty intuitive, I never had a moment where I was stuck or anything, though I did skim the description first (which maybe you have updated recently)