Making models from scratch is a concept that terrifies people, but it shouldn't
The photo illustrates some bodgery that has helped my boat look good. When I fitted the wheelhouse, I knew that the front edge would need to be cut away to compensate for the rising deck at the front of the boat. I should have allowed for this as I assembled the panels, but I didn't bother.
Cutting away the bottom of each was a bit trial and error as the rise isn't consistent thanks to the less than perfect hull. No matter, I just kept trimming until the wheelhouse sat upright.
Along the bottom, the cuts were less than perfect but some strips of plastic added a little decorate trim and made it look perfect. Each was cut over-long and cut or filed back, the front piece awaits this. Of course if you look inside you can see the errors but since no-one can, it doesn't matter.