Reading notes
Positions are scaled off the plan, so expect ±10–20 cm. Room partitions at the stage end and the hill line are indicative. The darker columns are the ones drawn solid on the plan (back row).
Check: the roof-beam detail sheet says 25 × 60 beam with a 12 cm slab and 10 mm @ 12 c/c, while the plan says 30 × 65 beams and a 15 cm slab. Confirm which governs before shuttering.
"Site now" is approximate, from your site photo.