This can be made in any length. Add the blusher length to the underlayer length to determine how much tulle you need. Use 72" width tulle for shorter lengths than fingertip, 108" width tulle for fingertip and longer.
Begin by laying out and straightening the tulle. If you do not have a table large enough to work on, a clean floor is fine. If there are creases or wrinkles, they can be steamed out with a steamer or by hanging the tulle in a steamy bathroom. A regular steam iron is perfectly fine and will not melt the tulle as long as you use the appropriate synthetic setting.
Small weights along the edge are helpful to keep it in place. Leave the center fold intact.
The bottom may be rounded off freehand, traced (a large plate or charger makes a great template) or shaped into a curve using a compass technique. Remember high school geometry? Measure off a square at the bottom the same height as the width of the tulle, folded. Use a yardstick or tape to measure the same distance from this point and it will trace the curve. You can mark the edge with pins or use a dressmaker's marking pencil. Even a regular pencil will work if you cut just within the line so that no mark is left on the veil.
You can use the now-rounded edge as a template to cut the other edge, or cut them at the same time by folding the tulle lengthwise. A short shoulder length veil with a blusher can be cut as a simple circle. A longer veil, when cut, will look like the picture below, with a portion of the side a straight line.
It is simpler to finish your edge before the veil is gathered. To gather, fold over the portion that is to serve as the upper layer. For a rippling cascade look, which is easiest to flip forward for a blusher, measure in 12"--18" from the edge before gathering, as shown below. For a puffy full look, simply gather across the entire folded edge.
Gather using a whipstitch which encircles the folded edge of the veil. A heavy button thread is good and won't break. Pass the needle over and around the edge of the tulle, taking many stitches until the needle is filled, then draw the thread through. Magenta thread is used below for contrast.
This shows the different look obtained by gathering either way. Attach to the headpiece, a comb, or a strip of Velcro.
The veil can also be worn ungathered. Below is a picture from a mid 1950s McCall's veil pattern envelope. The veil was folded as shown above and stitched, for about 8" along the fold, directly to the headpiece. This creates a striking cascading edge, and the top layer is easily flipped forward to serve as a blusher.
