When I sculpt most of the times I have a clear idea on my mind and I will create a loose interpretation of that in putty, although sometimes I need to develop ideas to a more accurate degree. This is when a pencil and paper will have a role in the sculpting.
I was always into drawing and I find it very rewarding to simply drift away sketching concepts all night, sometimes even at work. You never know when an idea will pop up in your head so its better to always be prepared with a piece of paper and something to scribble it.
Lately I have been thinking about my Tyranids and Killteams... I want to sculpt some alternative monsters and there are a few ideas that I want to explore, nothing too radical... this is what I have doodled so far.
Cthulhu octopus thing
worm head bugger
I will give it a go on the worm one and the popular Cthulhu, thing is these little exercises always give me a good starting point. Doing some concept art is quite creative and most of the times I end up with more ideas than I first anticipated so its all good. Sculpting, drawing and painting are all part of our hobby and I enjoy each single one of those things.
So there you go, even if the final result is not the best I already had loads of fun each step of the way.