Nice try and I like the overall composition but, the light is not complimentary to your shot. A polarizer might help if it is not mid day but, earlier or later would have made the colors pop alot more although you would have had to cut the butterfly in on a modeling contract if you waited that long.
Pretty image - the lighting needs a little work - the butterfly could realy use more light - i know asking for the world! - and the flower is not the best illuminated either. Both look a little muddy and not as vibrant as they could be. If the bf and flower were in the same light as the leaf in the lower right corner - you would have a GREAT image.