Opinions for DA Photo, improvements?

I think the photo looks just fine. If someone is going to quibble about the length of your hair (which is clearly within regulation), or a small wrinkle here or there, or a fraction of an inch on a sleeve, then they are going to keep looking until they find something. I sat on a selection board once and as long as someone didn't look overweight or have some glaring problem, people focused on your performance record. The biggest issues with the photos were looking overweight, having a bushy mustache, or having a 5 o'clock shadow. Having awards that didn't match your file was also problematic, but we didn't have that much time to audit every little thing in your record against what's on your photo. Spending too much time on that came at the expense of looking deeper into your performance record. The performance record is much more important than your appearance, in my opinion.

Allow the infantry to where their blue cord and discs like the old days.

Your right sleeve should be pulled down slightly, the left appears one inch above the thumb knuckle the right does not. In any case they should be at the same place regardless of measurement. As the Maj. recommended regarding unit awards. Your hair is well groomed however, since you may take an ew photo you could put some dry groomer as the front of your hair appears like locks. I am guessing you have wavy or curly hair, your uniform fits well and the accoutrements are well placed.

Good luck