I think this has potential. And thanks for sharing with us. But I'm thrown by a couple of things in the photo:
1. The sides of the table/island/chopping block. By including them on the right and bottom they're jarring and distracting.
2. B/c of the lighting, the mussel shells tend to disappear into the colander. I think this would end up being a much better photo if you put them in a shallow, wide, white bowl. Or another color (light red--to contrast with the black without quite so much dynamic range).
3. It's often common in food photography to include utensils or implements. The challenge with the knife you've got in here is: (a) it's cut off and (b) it's a bit big for eating or preparing mussels. I think it would work better with one of those small forks or a smaller knife.
4. One more hint: I was always told that the best food photos tell a story in one picture. Don't just shoot a picture of a piece of apple pie, instead cut a slide and then have one bite missing with a fork on the plate and a steaming cup of coffee near by (as if someone's dessert was interrupted by a phone call). Don't just take a picture of the cookie, put it next to a cup of milk and a note to Santa. So don't just look to take a picture of some tasty food, try to take a picture that tells a story. That's why "food prep" staging can be so effective, it can say "wow....you caught me just as I was finishing the prep on this tasty meal" and the spices and tools around can basically give you the recipe.
5. Last of all, it's popular with food photography to use a narrow DoF. But unlike a portrait (where you might have the foreground and background in blur), with food photography (at least according to my preferences), you don't want the foreground or closest objects to be blurry. So given the angle you're shooting from, the top of the colander needs to be in-focus as well as the mussels.
Personally, I'd recompose this shot. Put the mussels in the shallow, wide bowl. Add some crusty french bread by the side (so we can see flakes of crust torn off). Shoot it at a 30 degree angle from the side and allow us to see steam from the hot mussels rising in to the air.