First off, this is the best Dracule Mihawk cosplay I have seen, so congratulations good sir! I think you did a fantastic job on your cosplay overall. I really like the fabric choices as well as the wood that you used for your crucifix pendant; they in and of themselves, bring your cosplay to the next level. The fact that you shaved your facial hair into the proper shape is great too. You just need to fill in your chin a bit the next time you cosplay him; other than that, it's spot on. The only other things that I think could use improvement are your skin tone and eye make up. I know that when you are going to do a photoshoot, you generally have to put on more makeup in order for it to show up; however, I think you used a bit too much. It's going beyond accentuating your eyes in a natural light and takes away a bit from your fantastic contacts! As for your skin tone, you are fairly pale, but as we know, Mihawk has essentially white/gray skin. This isn't something that you directly would have to change, but if you let your photographer know, it can be an easy lighting fix or post production edit (I had to have the same thing done in my most recent cosplay).
All in all, you have a fantastic cosplay and should be proud of it! I look forward to seeing more great cosplays from you (^o^)