Installing tape is a bit of an art.
Before you start make sure the cables are securely taped to the bar - the cables should fit into the space of your first finger joint.

When you wrap, you want good amount of tension-that is the trick..Tension, but not too much or it will rip.

There are many different ways of doing it, but generally speaking I start from the bottom, first wrap is 1/2 out - that part will get tucked in and plugged.
I wrap towards the outside, that way when I grip the bars my hand will not loosen the tape.
Wrapping around the brakes is the tough part, you want both sides to be the same, you want all metal covered, but you don't want it to be too bulky.
I also cut a small piece and put it underneath the brake, over the bracket. The hoods gets rolled up before you start.

You want 1/2 width overlap as you go.

At the end what I do, is I make a diagonal, long cut on the INSIDE, so the last wrap ends up straight on the bar.

Have your piece of tape ready to close up the end.

I'm sure some will shred my method to pieces, but that's how I do it, it's a very individualistic thing, it's also very zen and quite enjoyable once you learn to do it right.

I'm pretty sure there are instructional vids on Youtube too.