Questions about Evra Birth control patch?

I just put the patch on today.i said to put it on the sunday after your last period. except i just got off the pill which made me skip my period so i didn't have it but i still put it on the sunday its expected for... i hope i did that right at least. But my question is. i put the patch down on my abdomen. now when ever i sit. the patch crinkles and im scared that its going to become loose and peel off at the crinkled and im scared its not going to work any more.. what do i do? or do i just ignore that?