hey, a quick tip on photo REF, the colors on a photo don't appear what think, since cameras have their own color capture, it tends to lower the colors when you capture it in person or online. is best to introduce colors like reds blues, or yellows depending on the scene so that it makes the painting more colorful, not too saturated or dull which you have, or you did but you were too attached to the REf which this mistake is most common.

hey I'm a student at brainstorm school, and I planning to take this course anyways the experience I got in painting while in school, in order the moonlight appears more brighter make your surroundings Less brighter so that in the brighter areas pop more, in your gray scale it seems that your med tones and bright tones mash together thus in the color part it seems it doesn't pop the moonlight. quick tip thou, if you use a saturated dark red or dark red not too dark nor to light, it darkens it just don't go over board. and it work in different scenes, my teacher in brainstorm gave me that tip.

hey just to help here, im taking courses on brainstorm, and my experience of painting, i say that your colors are very too bright and too contrast. make sure to have a balance light areas and darks areas. also i don't if you use white to brighten your colors but use oranges and yellows to yellows are brighter in gray scale so use that. never use white to brighten something cuz it makes muddy and dull the colors.