[Suezie]

See:
be carried out feet first
be dead on your feet
be run/rushed off your feet
be six feet under
be under your feet
cut the ground from under someone/someone's feet
drag your/its feet
drag your feet/heels
feet of clay
your feet on the ground
find your feet
get cold feet
get your feet under the table
get your feet wet
get itchy feet
get under someone's feet
have your/both feet on the ground
have itchy feet
have the world at your feet
hold someone's feet to the fire
in your stocking feet
in (your) stocking/stockinged feet
jump in with both feet
keep your/both feet on the ground
knock someone off their feet
land on your feet
not let the grass grow under your feet
on your/its feet
the patter of tiny feet
pull the rug (out) from under someone/something
pull the rug from under someone/something
put your feet up
six feet under
stand on your own (two) feet
stand on your own two feet
sweep someone off their feet
think on your feet
vote with your feet

Go to a similar page on this site and type in "step", "toe", "heel", etc fo more ideas

http://idioms.thefreedictionary.com/step