Project two look good, I'm not seeing much bounce light though. Also your planes are a little to flat; In most lighting situations one area of a plane is more lit and further away get dimmer. One neat thing you caught was the higher saturation on the inside corner of the pink block. The pink light bouncing off the lit face would
make part of the shadow more colorful (but still dark). One problem though is that your block is not self shadowing. Here is a quick markup showing the missing shadow:
The latest exercise was fun and challeging. I actually did it twice since I need the practice anyway. Here is the first ref I used:
I actually just used the thumbnail for ref. Color was the point, not details.
This one turned out okay. The long shadow got really lumpy because I went over it about a dozen times. It is both a shadow and lit, and has a buch of hue shifts caused by things outside our field of view. I also had trouble getting that hot orange band in the middle to look right.
After I got done I scribbled over the paint figuring out the lighting situation. This scene has two primary light sources, and two shadows. It also has a nice example of that wide band of identifying color. The shadows picked up a lot of the balls color, maybe the lights had a slight orange/yellow tint?
Here is the second one I did. I chose one of the more complex ref photos:
I think this image was intentionally over exposed, so the colors are extra saturated and the whites are all blown out.
I had trouble with everything on this one. The final image stands up well on its own, but isn't very close to the referance. I had a lot of problems getting the colors and saturation right, both on the glass and on the floor. In the end I didn't succeed, the photo's colors are a lot hotter than mine. BTW glass is hard...
This image is interesting because the shadow does not line up with the apparent light source. The highlights are a little right of the nearest side, but the shadow is cast to the near left. It seems there was a much stronger, but distant, back light in the scene. There were a ton of interesting light/color effects caused by the glass. The object is translucent and back lit, so it looks like it is glowing from within. Also the back light casts caustics into the shadow. The surface is somewhat reflective, but warped.
I painted these at four times the width/height shown. Using a larger image size helped with these I think. I also tried to keep in mind all the advice I've gotten here recently. Using a brush with a softer edge helped round these out a little more, but also tended to fuzz out the details I was trying to add.
I guess I'm going to work backwards through these for a while. Warm/cool painting is next!