This top is very close fitting, designed with approximately 2 inches of negative ease.
It is sized for a 36” bust and a 28” waist, and a longer-than average torso. Your measuring tape will be your best friend and most trusted adviser for this pattern; If your measurements do not match mine you will need do some math to alter your stitch count.
The collar is intended to be wide and sit around your shoulders, rather than on them. This is easily changed by reducing the number of cast on stitches. If you must alter the number of stitches you are casting on or working to, YOU MUST ALTER THE NUMBER BY A MULTIPLE OF 8. (i.e. there are 8 increases every other row, so if you want it 1 row longer or shorter, you will cast on an extra 8 or 16 stitches or 8 or 16 fewer. If you add/subtract 6 or 12, the eyelet pattern at the shoulders will get thrown off kilter, and the top will not fit properly.

To keep the collar from stretching indefinitely, i sewed strips of grosgrain ribbon to the back. This also prevents the neckline from curling and twisting.
The mesh bottom of the top is VERY stretchy - do not let the fact that this top is 100% cotton confuse you. As it is stretchy, it is very forgiving, but to keep the length it must also be weighted. I used glass e-beads (beads measuring 4-6 mm across) for this purpose. I chose glass because of its shimmer, and the fact that it can be washed. Plastic beads do not lend the same weight, and do not fare well in the washer or dryer.