Assuming one decides to “wear techeiles”, does one follow the shitta of tosfos (2 of the 4 on each corner are techiles resulting in 4 blue and 4 white per corner) ), rambam (only 1/2 of the 4 should be techeiles resulting in 7 white and one blue per corner) or the raavad (who holds an entire string is blue resulting in 6 white and 2 blue per corner.
once you decide that, then, there are many opinions how to tie the strings.