good focus i think, but i guess you probably took the picture on a overcast day, because it is kinda gray. I just wish there was more obvious strong side lighting to improve contrast.
I think this yellow is so lovely. The colour of the day actually makes the Rose look even a richer yellow. I like it very much. I love how clearly you got the center of the Rose too. And the faded background is perfect too. Keep up the good work. Verena