Some notes from Jason Lynch's talk the other day:
-Plan stop motion in 2d first
-"Guerilla" techniques are always a good way to start up your own studio
-Be proactive and always ASK QUESTIONS... (ie Jason's foot-in-the-door at Aardman got him the opportunity to work on Creature Comforts and Wallace and Gromit).
-Always think of your character's background - how they would react to certain situations they are placed in, past history etc. Character responses need to be well-designed and extensively thought through.
-Keep the story to the point.
-Don't be too precious about murdering your babies
-Think about the micro-story. Jason mentioned The Iron Giant's bolted jaw and the fact that there was a reason for it, which the viewer discovers towards the end.
And that's it... Hope this helps anyone who forgot their notebooks :)