Once the nuts are loosened and removed, lift the cover up and out of the filter housing. Remove the filter as well.
Be careful as you remove the cover. It can be easy to disconnect some of the vacuum lines that cross over and next to the oil filter housing. If this happens you may cause issues with the vacuum system such as the locks, the shut-off valve, or transmission.
Note that when you remove the oil filter, the bit of oil left in the housing will then drain from the drain plug. Make sure to leave the drain pan underneath until you re-install the drain plug towards the end of the guide.