OK here's a how-to question

[Puddlejumper]

Foam is easy enough to fix with white glue if you cut it wrong... get into it! Bust out the carving knife and get cutting. If it turns out horrible then get some white glue and put the foam back. Whatever repairs you need to make will be hidden with ground cover in the future anyway. The only way you will ever find out how it looks and if you like it will be to get cutting and try it out.

Dave