What's your hash rate / current time to produce? You'll know when you get the POW when in the steemd client you see your hash rate drop dramatically. You'll then see on https://steemd.com/@grahnite an update like grahnite found a pow. Also you will be at the bottom of the miner-witness queue on https://steemd.com/witnesses. It takes about 2 hrs to get through the queue. At this point you need to still maintain a good connection to the network, etc., and once it's your turn at the top of the queue, you'll get a message in the steemd client that you signed a block, and you should see your account balance go up. The mining rewards are paid in Steem Power.