I am really new to painting so I just want to learn what other people do in this scenario. I wasn't able to finish this painting in one sitting so it is dry now. I later realized the highlight in my painting is too small. Is it ok to just paint over the existing dry part? Any upsides or downsides to why you do or don't do this is your process?
Also, I find myself lost in the minutiae while painting and mixing color to match my reference picture and lose sight of the big picture of light and dark areas overall. Any tips?