Took this multiple exposure ( 6 shots) at an indoor workshop and decided to play with it in my PS sandbox. First I darkened with Viveza the blue bg to contrast with the sunflower petals that reminded me of flames.( Its been very hot here in Md.) I then ran the result through Color efex detail extractor to bring out some detail in the petals and fractilius added the flame like feature to the petals. Finally to bring out the detail in the center of the flower itself I used a screen blend mode followed by a black mask. I then painted in some detail in the center of the flower.
D4s Nikon 105 mm lens
1/100 sec at f4 ISO 4000