Congrats on your purchase if you have done with the payment. ALLAH naseeb karay Ameen
Now comes the main part,
Check the initial meter reading be sure of that you are not the victim of meter reversing mechanism.
Go for Engine Tuning
Oil Change (Including the changing of filters like oil, air, cabin)
Check the Transmission Oil (Change if required)
Check the spark plugs and change if required
Check the brake oil with the brake pads, cleaning is necessary
Check the coolant and change if possible
Check the wheel balancing and alignment
p.s. be sure to use the original stuff for the optimum performance. visit to any 3s dealer is not recommended in case of presence of any reliable workshop of your own, just buy the original parts and get the things sorted under your own supervision