Post-presentation depression

Since I couldn't rehearse my presentation well enough, there was a lot of ambiguities flying around. Here's the feedback I've got:
-The project is for a noble cause.
-Meaningful, and important
-Frame your investigation
-The Target Audience is non-verbal and physically challanged
-You're apologizing for what's missing/apologelistic presentation
-Establish why this project is important
-Temperature.. is it as important as pain?
-more background, research and medical information
-Not doing well by changing what you had in the first semester
-Closeness of a patient. What do kids associate with? Smell? Mother's Smell?Embrace?
-Don't go crazy with the functions
-radiowaves is an absolute no no for projects that work with children because it effects their brain.
-Is this an art piece like dunne and raby is looking into design noir? or is it a practical object that you are willing to use in the medical field?
-disconnected presentation
-build your case


Long story short, I couldn't present my project and I'm angry! ARGH!