Geez, relax. Your image was only up for half an hour. Some of us have to eat breakfast!
The first comment I'll make is that you have a lot of dirt on your sensor. You should definitely clean that, but if you're unable to, 'tidy' up those spots before posting.
Overall, the image isn't bad. It's a nice central composition, which I like for this type of subject; the rule of thirds doesn't apply in all situations. The colours appear just a bit off to me (although that may be my work monitor) and it's slightly under-exposed.
Given that you didn't have a macro lens, the background isn't bad; I understand you have to be stopped down to get all of the bloom in focus.
I would clone out the bright spot on the one stamen lower-left, as well as the dust/pollen on the petal aimed at the upper RH corner.
Just my $00.02 worth - your milage may vary.
~John