Photo #1 shows the 'curvature' of the bulkhead and intersection of the conical form of the fuselage. It looks odd (crooked) but is consistent when checked on the inside with a straight-edge across the aft baggage compartment.
Photo #2 shows the fwd end of the F-674 fwd top skin and the curvature of the skin where it will meet the rollbar assembly and the canopy over the baggage compartment.
Photo #3 shows more closely the position of the fwd end, yet undrilled to the longeron. The Sharpie line (red) is the recommended 'trim to' line for the F-674 but is cut 'wide' of the line until more information is available. Rough cut. Always easier to trim more than to remake the part.