Comments

Cyclopentadiene

You confused exo and endo in your chemdraw graphic.

Taxol

It's intereseting to see, that the chair isn't the most stable conformation with molecule 10. Goes to show that your initial remark on six-ring energetic stability is correct for cyclohexane - but it shows that this piece of info has to be interpreted. It can be right (molecule 9) or can be wrong(10) or can be right again (10, with trans H pointing down).

NMR

Epoxide

Very good section! I like the graph showing the inductive effect and lone pair donation!

NMR

"It can be seen from the table below that the epoxide has a very similar calculated 13C and 1H NMR spectrums within a same pair of enantiomer. Therefore, NMR cannot be a good tool in determining the absolute configuration of the epoxide. " Good!

Rotations

"calculated ORP " you can just change the sign for the different enantiomer. Gaussview has a 'invert structure' option. Also, the difference in calculated values for table 15 should really make you stop and double-check. You missed a chance for a bit more discussion. ;)

TS

Well done!

QTAIM and NCI

Good!