The two that make green is blue and yellow
Yes, whenever an object blocks light the area of darkness expands. For example when the moon blocks the sun completely during an eclipse causing a large area of earth to be completely dark as if it was nighttime during daytime.
Not true.
i'm an artist, you can trust my input.
working with photography, you can take a picture of anything. right? my point comes to this, subject doesn't matter. for example, lets say i go out and take a picture of a trash can. trash cans are not that pleasing to the eye. you can take some ordinary photo of that single trash can. what matters is the angles. don't overthink it. you have to let creativity flow in order to get an interesting result. get low to the ground and get close. maybe get some details in there. then to take it even a step further, that goes into your editing. that can also add to the photo. but the raw photo itself, you need to get creative.
hope that helped?