That Blueberry has a very interesting set of pointy cotyledons, could have some Vulcan in it. It's nice to see everyone's seeds all looking the same, pretty nearly. Trying to get my close ups sharp on the seedlings has been driving me crazy, it will always focus on the stones. I found its best to set up the shot and then press to lock the focus and exposure. Then you keep your camera to eye distance the same, that is you move your body back and forth to focus while just looking at the leaf.