That is a good length on the robes. This is a movie Reference
Also this helps you from stepping on your robes and having this happen.
Lucious Talvloinne TR-4126 (Stephen Davenport)
Costume Referencer 08-09 Detachment XO 09-10 Detachment CO 10-11 Detachment CO 11-12 Detachment XO 12-13 Detachment XO 13-14 Detachment X0 14-15 Detachment Mentor 15-17 Detachment CO 17-18
Owner of Carnor Jax - Captain Argyus - Revenge of the Sith Royal Guard - Force Unleashed Royal Guard
So back up a inch and helmet color and fix zipper. Not inner robe not Seen is bout 5 inches up is that correct or should I go lower. Specifications just state slightly shorter.
The best way to answer your question concerning the inner robes is to take a picture of you in them. That way, we can take a close look at the sash and inner robes and their length.
Same with the boots. You are almost there brother. Take a picture focusing on them and making them fully visible.
So to recap: fix the zipper, paint/re-paint the helmet to match the outer robe colors, make sure length is equally distributed on outer robes and take pics with just your inner robes.