What is form? The combination of aspect ratio, perspective and framing relating to the geometric shapes, lines, shadows etc., in front of us. The landscapes we work with are often chaotic. I see excellent work that can distill this towards simplicity but much less where form is up held throughout a sequence of images. It’s really about showing that you as an image maker are in control. Essentially as a viewer, that’s what I look for in a photographer.
Dissonance and harmony interspersed throughout a sequence without any sequential progression or understanding of their place will knock back appreciation from the more studious onlooker. Learn to see what your shadows are doing and of course every area of the frame counts, even the parts that appear empty. Form is not solely based on how you compose, it’s about what’s in front of you.