I dont think you need to actively pedal any differently than you do w/o clipless pedals. I think the benefits come w/ the added confidence that when you stand up and really mash up the hills that your feet arent going to slip off. when I start from a standstill I suppose I pull up alittle on the cranks just to get up to speed.
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2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
2000 litespeed Unicoi Ti, XTR,XT, Campy crank, time atac, carbon forks