Window / Porthole edging

[Bizzie]

Hi all,


I've not long had my first cruiser, a 26ft Newbridge Pioneer. I'm currently giving her a bit if a makeover and am looking for ideas on how to line the window frames interior, for want of a better description. They were replaced by her previous owner, but the gap between the headlining /sidelining vinyl and where the window is looks a mess. Any ideas on what I can cover this 2cm area with?

Many thanks,

Biz