Detailing the cloud for emphasis

And with the cloud, I think I'll use a pencil because it's a small little area and I wouldn't be able to do that with my finger. So, I'm just going to look at the cloud in the sky, in my photograph, and look at where the light is across the top, and try to capture that with this pencil. So I'm leaving some of the white that was established from pulling the color off the surface and using this as a sort of the highlight of the cloud. And it's really cool white, this is very, very cool and it's working against a white surface, so it's warm, so the warm and the cool are reacting to each other. Which is good, that's what I want. I want contrast of the light on the cloud, and the shadowy part of the cloud. And I also do something else. To maybe push the cloud to relate to the tree. Which is just to add a very, very, very light tone of purple. I'm just going to graze this over the surface. And it's very subtle, but it's meant to sort of pull a relationship between these two areas. I had…