1). Give proper notice, per the terms of your lease, that you are moving out
2). Thoroughly clean your apartment/house to restore it to move-in condition (this includes shampooing the carpets)
3). Repair any damages (i.e. holes in walls) that you caused (this does not include regular repairs not caused by your occupancy - i.e. a leaky faucet)
4). If you are responsible for the utilities, a final meter reading will need to be performed by the Water Authority when you move out. Only Landlords are permitted to order a final meter reading. The Landlord will pay the final bill, furnish the tenant with a copy of the paid bill, and deduct the bill from the Tenant's security deposit.