Nathan, I showed your post to my wife as she's a specialist in determining flowers. But she wasn't able to say what kind of blossom you've captured. Probably it's a fruit blossom (cherry, pear of apple tree). She said it's very difficult because of your 'against the light' image.
Sorry I couldn't help you. Agree with you that it's a nice post anyhow.
Regards, Cornelius.