Here's what I learned when I put the stripes on my '71 bee clone:

Start with the hood stripe first. It goes 3/4" forward of the rear edge of the hood. Work toward the back of the car from there.

The fender stripes are tricky, because they taper in width. I ended up having to lift and reposition the thin outer stripes on the fender where they meet the hood. I squeezed them in to meet the hood stripe. It's not noticeable because the overall width tapers smoothly.

Trim the facing paper on the ends of each stripe all the way to the edge of the stripe. This will aid in alignment, as the facing can sometimes be difficult to see through.

Study LOTS of pics to get an idea of proper placement, particularly on the doors (under the mirrors) so the stripes end evenly on each quarter panel.

ANY significant trash under the vinyl will show through.

I used Ivory dish soap and water with a Bondo squeegee. It worked well.