a black hole?

I have just put the buttonHOLE band (in BLACK) on for the third time...I should say I have re-knit the entire thing with 7 - count ‘em, SEVEN!!! buttonholes - like completed one whole band, attached it with a garter bar - remember, I’m talking black at T5 - didn’t like it, picked it off; made the second one, attached it, darned in the freaking ends - still didn’t like it, unpicked it off...same problem as with the first one! My newest, totally awesome, bound-looking buttonholes have a problem with a loose thread on one side...and I couldn’t figure out what I was doing that caused it...well, finally on the third time, I realized that when I was casting off the stitches, beginning on the right, after transferring the 2nd stitch to the 3rd needle, I was wrapping the yarn, coming from the right, under the needle and then into the hook from the left side - almost like wrapping the needle first, instead of just taking the yarn from the right and putting it directly left into the hook to cast off the next stitches - this little 'faux pas' was making a looser stitch that was really noticeable (to me anyway) after it was all done and off the machine - but, the good news! - if you were actually casting off stitch by stitch and needed it a bit looser - this would work! who knew? oh, don’t answer that....

Here's the buttonhole instructions from Simple-icity:
Buttonhole band. As for button band, making 7 buttonholes spaced as desired, as follows:
Cut a 3 yd length (3X width of n’s in work) of MC and set aside. As for button band, to RC007. Bring out 4 n’s for each buttonhole (for 20mm/7/8 inch button). Make a note of needle numbers. Ravel cord, knit by hand the buttonhole sts, leaving n’s in work. K7R. RC014. Fold row, T10, K1R. Knit to RC022. Bring buttonhole n’s slightly forward. Pick up sinker loops of MC (above ravel cord - there are 5). Place on n’s above, starting one needle to right of noted n’s. With extra piece of MC, from right, knit sts on first n, leave it in place. Knit next doubled stitch, then transfer it to left, leaving empty n. Repeat on next 3 n’s, to 4 empty n’s. After last transfer, knit and leave in place to anchor end of hole. Carry extra yarn to next buttonhole and do all buttonholes in this manner. Go back to right with extra yarn, chain across empty n’s (in hooks), anchoring yarn by wrapping on either side of buttonhole. The extra strands will be encased in the band. Pick up sts below ravel cord, hang on previously empty n’s. Pull out ravel cord. Pull loops through chain. On each side of buttonhole, wrap next stitch/needle and bring all n’s out, pushing work behind latches. Knit to RC029 and finish as for button band, attaching to right side of garment.
I could show you how nice it looks in black, but you’d just have to take my word for it! I'll tell you later what the band was being attached to....