Really nice. Though dont know if its my screen but the rose looks a little out of focus..
Very nice well saturated shot with good DoF; would it look better with a 'squre' crop?
I have the sigma 105mm lens and is a mean bit of kit also great for portraits and with tubes wow
Try and find a flower that isn't damaged round the edges. Spray some water on it.
Use a small aperture and get some light on it - f16 or smaller so that you get plenty depth of field.
EOS JD Thanks for the tips wasnt really sure about settings but will give it a go and Yes my poor rose was dying it was the last of the bunch and I wanted to try my new lens out