I've still got some rough sculpting to do on the terrain before I can do the detailing.
I got started on today's portion of the sculpting and got it partially done before having to save.
http://farm6.staticflickr.com/5507/12406930275_8f5044c5ce_z.jpg
Here's my saving screen and I use save as and give new save file names to each world save on one project.
http://farm4.staticflickr.com/3727/12407099043_dd00916cde_z.jpg
I did the rest of the sculpting for today.
http://farm4.staticflickr.com/3723/12407412944_8a418be0ed_z.jpg
I had to save as again and use another new save file name for this save.
http://farm4.staticflickr.com/3817/12407417554_e32ed5d322_z.jpg