The thwarts and floor boards are just resting in place. Since the photo was taken the forward thwart, its riser and the mast step have been glued in place.
Same situation but looking towards the stern. The sternsheets are only resting in place.
1. Glue both thwarts in place.
2. Shape the thwart knees and fix in place.
3. Gunwales (big job!).
4. Finish sternsheets and screw in place.
5. Stern seat back, laminate ply and shape to suit boat.
6. Floorboards, finish and screw in place.
7. Other, something must have been forgotten!.