I like the pattern you tied. Looking at the photo, it seems your intent is to have the fly present hook down, as you show it. But it looks like you tied the dumbbell on top of the shank. I would worry that with the dumbbell eyes tied on top of the shank, their weight may flip your fly upside down. Of course if the hook bend and point are heavy enough it may not happen. You might want to try to place the dumbells under the shank and avoid the issue. Alternately, you could position it as is and dress your fly hook up, thus making it snagless.