It's all very straight forward, take time out to inspect the "A" pillar, bonnet hinge mounting area behind the wing, now is the time to sort any corrosion issues!
The fit of the new wing may be slightly compromised by worn factory tooling, and a little manipulation may be require to get the wing to fit with a proper gap against the door, this is normal...
Prime and paint fitting edges to new wing before fitting, the rest is easy

Thom