I'm right handed, found the easiest way is to start at the 9 o clock position and work anti-clockwise towards 3 o clock. This is using the curved rim tape strips on a sheet where you need to use about four of them to do each side of each wheel.
Hold tape in position with left hand, move about 2 inches right with right hand, position, then smooth over with pressure once happy to remove any trapped air, repeat repeat
Found the hardest part to do is the left hand side of the back wheel where its hard to get at the wheel rim because of the chain & swingarm & angle of bike on the side stand.
If you had the bike on a paddock stand rather than side stand that part would be much easier. Also recommend doing it outdoors on a bright day, you might make little mistakes that look ok in artificial light but show up in daylight.
I also find it helps to stick the right end of the tape onto the wheel somewhere to stop it flapping about and potentially picking up dirt while I'm applying.
Lucky my new bike has painted rims, so no more taping for me