The sketch is generally only a rough guide to follow and if I'm very lucky, I find the block evolves as I engrave it. Things get altered; a bit lighter here or a texture there and additions or deletions (before they're engraved, of course!).
I think the central stage area will be mostly white with small areas of light texturing (I shall take away some of the texturing I've already done as I like the bold silhouettes of the audience against the white.) I'm seriously considering removing the plant from the bottom right and replacing it with something else Minack-ish. Maybe a portion of the wonderful carved stonework they have there. Or a half-finished cup of cocoa on the grassy ledge perhaps!
It really is a fantastic place. It was created by one determined woman and her grumpy gardener. http://www.minack.com/ Below are a couple of photos I took when I went.
A panorama of the auditorium
And just before the play opened. Note the moon over the distant cliffs. Magical!