I don't see any guidelines or forms. maybe if you don't know what to focus on it would help to start with the construction volumes and draw your lines overtop of that
If you can, overlay the drawings over the original photos after your session to compare how close you got to the proportions and where you were off.
They are already looking quite good, but my main tip would be to try and reduce down your number of lines, as I feel some of the sketches are getting quite messy and cluttered, which takes away a bit from the overall movement and readability
