The pop shove it is a weird one in that it's technically pretty easy to do, but to do it with decent pop and to catch it properly on the front foot can be pretty hard, even for the seasoned street raider.
For a Shove-It, you want to get your feet into the same position as you would do the nollie, but it's more on your back foot to pop it and scoop it.
You slide your back foot down, ollie, whip it around with your back foot.
Then when it's done a full 180 in the air, catch it on your bolts. Land it and ride away.