Finished a car seat poncho, like maybe the zippered Goober Pea Pod, and want to add on some arm holes? Here’s an easy (and cute!) way to do it!

STEP A Using a washable marker, draw two matching ovals approx 1 inch (2.5cm) wide for your armholes. You can make them as long as you like – these are about 6” (15cm).
Then carefully cut them out, through all layers.

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STEP B Finish the edges of your armhole. This can be done in a number of ways (see under the next picture for other options), but this tutorial shows you how to fold the edges under and close it with a ladder stitch, by hand.
To start, fold the edges under (towards the wrong side) by 1/4 inch (6mm) and pin or clip – do this around the entire armhole.
Then stitch it shut by hand using a ladder stitch. If you are not familiar with a ladder stitch, see it here: https://www.youtube.com/watch?v=uqrTtitjdnY
IMG_0635aSome other options include:
-For fleece, leave edges raw (since they do not fray or shed) and simply stitch the layers together around the hole
-Bind the edges with double fold bias tape or fold over elastic
-Zig Zag or serge around the edges.
STEP C Now that your armhole edges are finished, you need to cut two rectangles big enough to cover your armhole by about 1.25” (3cm) in all directions. This means they should be about 3.5 inches (9cm) wide (since your armhole is 1” wide) and 2.5” (6cm) taller than your armhole. The armhole in this example is 6” (15cm) tall, so the rectangles are 8.5” (22cm) tall.

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Next, take your rectangles and sew them right sides together around the edges using 1/4” seam allowance, leaving a gap for turning on one of the long sides. Then clip the corners diagonally.

Turn it right side out, and poke the corners out with a blunt object (eg. chopstick). Fold the gap in, and topstitch on THE LONG SIDE WITH THE GAP ONLY.

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STEP D Cover the armhole with the rectangle. The topstitched edge should be towards the center of the poncho – this is the edge that will remain open for the arm to come through. Stitch the remaining 3 edges to the poncho, through all layers.

TIP: A walking foot is helpful when sewing through many layers of fabric

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And you’re done!! Here is a view of the arm hole from the inside of the poncho:

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