I'm trying to keep the edges soft, because putting in a hard line can make problems later on if I want to correct something. I'm also keeping the paint very thin and in control. Any two values next to each other are kept very close at this stage, no big jumps. I've found that forging ahead to carve out the lightest lights is satisfying and gets instant "popping" results, but can make problems for me later. Therefore, the whole thing looks a bit dingy at the moment.
Sorry no video demo today - I've filmed it, but we're having technical difficulties.