I put the wraps right into the boiling water for about 3 seconds. Caps are held on inverted bottle with a wooden spoon.
By laying the bottles down you can use the bubbles as a guide for putting the labels on straight. Also, the lower to the bottom the easier it is to use the bottle bottom edge as a guide to squaring the labels.
I don't have a fixed winery name but create one for a particular batch or for a particular person. The first label you see was for my Mother in Law suing Google maps to get a street view of her home. The second label is a generic but only for my Lemon Berry Wine.
[Oops! First label was snipped from my Avery account with spell check turned on. Label doesn't print with red underlines.]