Last photos are superb, crop the photos down to just the coin and you'll like them even better. basically what you want to achieve is as close to what it looks like in hand as you can, as that is how they'll be graded if you send them to a
TPG. Others may have advice as well. I find indirect lighting is best, as direct lighting gives too much glare, I cover my lights with regular printer paper and find it to work best, and have tried all kinds of lighting angles as well.
Again, the last photos are great!