Opaque enamel with stencil

I redid my leaf skeleton stencil work but I used flat copper pieces and added backing enamel for support. The details came out so much better but I think this is also due to the change in enamel colours that I used to create contrast. Figure 1, I used light and dark green which is almost an exact match of colour to the leaf when it is being cleaned. I used a light green and blue enamel on the second one (Fig 2) to try something different but still keeping the contrast.

Figure 1- Green layered enamel

Figure 2 - Blue and green layered enamel