After a few trial and error prototypes I decided on a one-size-fits-all pattern for my fingerless gloves. In case I forget how to make them, or if you want to know my process, here is my pattern.
Cast on 32 stitches.
K2, P2 until the end of the row
Continue until you have approx 1” of ribbing
Knit one row
Purl one row
Increase 1, knit the rest of the row
Increase 1, purl the rest of the row
Knit one row
Purl one row
Increase 1, knit the rest of the row
Increase 1, purl the rest of the row (you should now have 36 stitches)
Knit one row
Purl one row
K16, place stitch marker (m), increase 1, K4, increase 1, place stitch marker (m), K16
Purl one row
Repeat the above two steps until there are 12 total stitches between the markers, ending on a purl row.
K16, bind off 12, K16
Purl row -> at gap crisscross the bookending stitches over each other before purling.
Increase 1, rib row
Increase 1, rib row
Continue until you reach desired length
Bind off loosely. Leave a long tail with which to stitch the edges together.
Stitch the seam along the side of the glove and cut off the excess. Turn right side out.
Done!