Great image and nice layout. Too bad you can't work on it anymore, as it would need some adjustments indeed, I'd say. Maybe you can open the backup file (.tgdbak)? Loose the bak part. I think the rock may have some more color variation, maybe some strata colors (X and Z stretched fractals), and I would give the edge of the lake more muddy/algae colored stones. I hope you'll be able to retrieve the file.