NOTE: the cable will look bulky, but in reality it's not that heavy, and the cord unwrap itself over time if you leave it on the table, but that's the price to pay for a tangle free phones, right?
Step 1: Materials and tools.
patience, lots of it
large surface (ie. a floor)
Step 2: You doesn't have to go pro for all steps in one page.
2) now close the tape together, it should form a flat surface you want. (make sure both sides are closed together without the glue stuff leftover)
3) Do the same for the other side, this will make the cable much stronger.
4) close both sides by warp the tape Around them.
6) Profit !