Help with the images, please.

[Yarik]

My images once again failed to pass approval. Why would this happen? I really want to know what is wrong with these images.

Image screenshots:



Image titles:
1) Supports 1 segment [0.5] [x-300 y-200]
2) Supports 2 segments [0.5] [x-300 y-400]
3) Supports 3 segments [0.5] [x-300 y-600]
4) Iron bars [0.5] [x-90 y-100]

If these images I drew are not suitable for PB2, I want to know why.