I figured that since there are two layers, and the fusible is attached to the bottom layer, that it wouldn't be obvious at all and it's not. I used tiny strips of fusible, maybe 1/8" to 1/4" wide and maybe 1/2" long and spaced them out over the area. I just wanted to hold it in place.
I think it will be a good way to do the berries. They will be gathered into a circle and the fusible will be on the back side of them.
I used a mix of needle turn and basting. I turned under and basted the large pieces like the vase and the birds.