The Bee's Knees

Here's an up close look at a Bachelor's Button with a busy little bee, taken with my macro filter and 50mm lens set to f/1.8.  I did crop a bit off the top... I did an awful job framing it because the tiniest movement makes a huge difference and my face was maybe 6 inches from the bee. All the bees were so busy, and they couldn't have cared less about me, but still I felt tense. When I try a closeup like this in the future, I need to remember to use a higher f-stop. It would have been nice to get the whole bee in focus, not just his knees.