They gave you single stage so clear is optional.If you're happy with it now,enjoy it,you're done.If they didn't tell you,don't wax it yet.You need to give it 30 days to fully cure,so just keep it clean for now with normal washing.I prefer to go 45-60 days before wax based on a 30 day recomendation,but ask the paint store you bought it from since you didn't mention the brand.I use PPG and the above is what I go by.