Work in progress on a 28mm sculpt of a Frogman in Space! RT era Imperial Guard lasgun included for scale. This is my first serious attempt at a 28mm model so it will likely be a bit meh but hey gotta start somewhere. This is the result of session 2. I expect it will take many more iterations of work before I stop on it. The key thing is to know when to leave the bugger down to dry for a day!
TheOttoVonBismark 
Nice start! I ilke the small, gangly stature.
As for when to stop, I find that if I am mentally even asking myself if now is the time to stop, then that means its time to stop. There is no such thing as a quick sculpt I think, its all layers over time I reckon (but take that with a grain of salt, considering my almost zero sculpting experience).
Seems to be my experience of it also with my slightly non-zero experience. At the moment I don’t really know what are the best bits to sculpt first. Will just have to pick it up as I go really.
🙂