Eyelet curtains are secured to a curtain rod not through a piece of folded over fabric but through many holes secured with grommets, similar to a shower curtain. They add interest to a room and can be achieved quite easily with a decorative shower rod and some light to medium weight material. You do not need any special grommet maker for the eyelet curtains as large snap on grommets are easy to find.
Measure your window's length and width and purchase enough fabric so the eyelet curtains can hang to the floor or at least 5 to 7.5 cm (2 to 3 inches) passed the window seal. Add 15 to 20 cm (6 to 8 inches) to the length for seam allowances.
Hem the bottom and sides of the curtains. Turn the curtains over on the wrong side and fold the fabric onto itself by 2.5 to 5 cm (1 or 2 inches) so the raw seam is folded on the inside. Iron the hems flat. Sew over the hems with the sewing machine in a normal stitch length and with normal stitch tension.
Hem the top of the curtains. Measure out a piece of fusible interfacing 7.5 to 10 cm (3 to 4 inches) wide and as long as the curtains are wide. Fold fabric over the interfacing by 7.5 to 10 cm (3 to 4 inches) , folding the raw edge under, and fuse the interfacing into the fabric. Place a damp cloth on the interfacing and iron over it for 2 to 3 minutes until it is set. Sew the hem down using a normal stitch length and with normal stitch tension.
Place the eyelet tape on the interfaced edge of the curtains, spacing them apart evenly, and cut holes into the fabric in the middle of the eyelet tape. Snap the eyelet grommets in place over the eyelet tape securely.
Hang the eyelet curtains on the shower or curtain rod above your window.