Sunsets

This is the one time that you do want to be shooting into the sun, or better yet, shooting into the bright sky after the sun has gone down. This is one of the few times you do want a brightly coloured background (the sky) with the dolls as mere silhouettes. But it's best not to have the actual sun in your picture, as it's not good for the camera sensor, so wait until the sun is behind a cloud or sinks below the horizon.....

Don't use a flash to highlight your dolls, because in my opinion it ruins the entire feel of the photo.   Compare these two photos....

The one with flash might show the dolls better, but the photo without flash is a much nicer picture. Taking photos in such low light can be challenging because of 'camera shake' when the shutter speed gets really slow. I can shoot hand-held down to 1/8th of a second and if I take several shots I have a pretty good chance at least one will be reasonably sharp. Slower than that and I really have to use a tri-pod. So familiarize yourself with your own camera so you know how low a light you can get away with - or use a tripod.