I formed the windscreen escutcheons in the vice using a plastic hammer, and also used a rounded piece of wood to try to form a neat curve to match the bodyshell profile. The body curves in many ways, so it took a little bit of fettling to get it to look neat.
I then finally polished the escutcheon edges and M4 button head set screws on the polisher before fitting.
I added some extra sealant around the plate prior to fitting, and then cleaned off the excess. I will polish the escutcheons and surrounding areas once the sealant has cured.