Remember to work as a group / speak to each other and produce the drawings collaboratively. Each group will produce three cross sections 1:200 and one long section 1:500.
All four sections should be of coherent quality. Either hand-drawn or CAD. Those should be line drawings!
You will have to go back to visit site to gather more first hand information / survey your section-line & fragment utilising your site-diary and record details you find.
drawing by Hassan Sheikh