I copied this apron from a RTW one a friend of mine had. It has adjustable ties. The height is adjustable, because the ties are not attached to the apron, but go through a tunnel.
Things I learned:
- I used bias tape for the facing, which turned out to be a mistake, because it was very hard to mold it into shape and especially turn it under at the ends.
- I also used bias tape for the ties, which was OK, but not very easy to sew, as the bias stretched.