Work in Progress

I'm experimenting with using a palette knife and acrylics. I'm not diluting the acrylic, so it can really bunch up under the knife. I like the textural effect, but stepping back it's a lot of shades of gray. It's a good first and second layer, and I'm reasonably satisfied with the composition, but I'm not sure where to go from here. I do like the flat graphical effect, and don't really want to impose depth on the painting, but it needs contrast. Maybe just another layer of the same palette knife effect with contrasting colors or brighter versions of the colors already down.