Fitting hull skins
I haven't built a Sea Queen but most of that sort of boat are built the same way.
Sand the stringers and the bulkheads so that the bottom skins fit flat on both stringer and bulkhead, glue bottom skins, when dry, trim back to stringer and at the same time sand both stringers and bulkheads so that the side skins sit flat, then trim after glue has dried.
If you have trouble bending the skins at the bow, warm the ply with a hair drier.
Some one my reply with more or better information that has built a Sea Queen
Good luck
Alan