Step 2: Wrapping
Start by sticking the end of your tape to one end of your marked area, don't cut a section though, keep it attached to the roll.
Let out some of the tape, and let the roll dangle. Now give it a spin until you've got a nicely twisted section, but not so far that your tape rope begins wrapping onto itself creating a sticky mess. It is best to start off with small rolled sections, because it's easier to add more, than take away.
Now spiral this rope around the hanger until you reach the other side of your marks, leaving some spacing between to create large grooves. If you run out of 'rope' before reaching the end, let more tape out and spin.
Now, we don't want clothes actually sticking to the hanger, and having a fuzzy mess down the road, so finish the grip off by wrapping it normally with flat tape.