My process goes like this:

4 Rolls of Neubaums.
2 Color of choice, 2 white or black, depending on what the top color is.
Wrap the bottom layer normally, secureing w. tape at the stem. I don't cut any strips to cover the brake levers.
Top layer, cut 2 small pieces from each roll and cover where the lever attaches
Trim the edge of the tape so it is not so thick and wrap from the stem toward the lever, bringing the tape towards you.
Attach under the lever
Do the same from the bottom of the bar and attach under the lever.
4 coats clear shellac.

This way, there is no electrical tape or twine on the bars needed to "finish" the tape. The shellac locks everything in place and after a couple of rides is nice and smooth. The bars have a bit of give from raod shack etc. The tape resists dirt & grime and can easily be claened and re-shellaced if need be. It lasts a really long time. I can send you some pics if you are interested.