Can definitely see some veining in there!
If I may offer a tip... Your light looks nice and bright, so that's great! But if you were able to decrease the size of the beam, you will see the air cell more visibly. (and it could be just the pictures, so ignore this if what you are seeing is fine on your end)
I took a piece of foam craft paper, but there are many ways to do this. Thin cardboard, thick paper, etc. Cut a small hole, and position the hole over the center of the flashlight beam, then tape it around the flashlight. I have also used a scrap piece of thin fake leather. Something soft also gives a little protection in case you bump the egg in the dark too. (at least it helps for klutzy me.. lol)
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