Using a zig zag stitch make your seam with a 1/4 inch seam allowance, begin along one side of the napkin. When you come to the corner, leave the needle in the down position, lift the presser foot, rotate napkin 90 degrees, then lower presser foot and continue to next corner.  Repeat at each corner.

Use the black thread on the orange fabrics and the orange thread on the black fabrics. 

You're done! 

Fold in the corners and press them. The corners should make right angle triangles.

Fold up all the sides so the folded corners meet and make a neat new corner, much like you did in the first round of folding.

Pin the sides like this and press them.

Fold all the sides in so that the croped corners meet to create new corners, and press them.

Cut four 9 inch squares out of each of the assorted black and orange fabrics.

Mark 3/4 inch in from every corner.

Like this.

Snip all the corners off using the marks you made as a guide.

The following supplies are to make twenty 7" napkins. 

1/2 yds of five assorted black and orange fabrics.

Counting from the top down I used:

1. A Windham 19th century reproduction fabric, P+B Dotty in black would work great too. 
2. Moda's Loft in Orange Smoothie Main Street
3. 3. Another Windham 19th century reproduction fabric,  Mystery Black Spade Flowers by would work great.
4. 4. American Jane Orange Dots by Moda.
5. 5. American Jane Orange Stripe by Moda.

2 small spools of Gutterman thread, in orange and black.

(I also used 2 yds of Black Lotus Cocinelle by Kokka for a table cloth. To make a tablecloth, follow the same direction for finishing the hem and corners below).

These simple cocktail napkins are a great way to add a handmade touch to a Halloween party (and in other colors they'd work for any celebration.) The technique for making the neat corners is a good way to finish any 90 degree angle.  --Molly