We started with cutting out our half-ovals and then sewing the two colors together - twice, one for the front and one for the back. Then we sewed the panel piece to the lower green part.
We could have just sewed the front and back together, but opted for the side panels to give more room and depth. Function!
My new rotary tool came in handy for this part, especially since we were piecing together two different colors. I also found that my walking foot was easier to use with this bulky material.
The arm straps were the easiest to make, with the exception of lining the colors so that they matched up with the back pack. Just a single stitch down the entire length and then turn inside out. Felt is a great textile to work with because you do not have to finish the edges to prevent fraying.
The zipper is my least favorite embellishment to add. For this I split the light green panel in half lengthwise and then sewed them together. Then I opened the piece up and flattened out the seam so that the seam was visible. The zipper is then placed on top of the seam, lining the teeth along the seam of the fabric. Pin into place.
Sew along the edge of the zipper and be careful not to sew over it. At the short ends of the zipper, I sewed back and forth several times for extra security. Kids are hard on zippers and I wanted to be sure this one stayed put!
After the zipper is in place, grab out the seam ripper and break the seam over the top of the zipper.
Did I mention how much I hate installing zippers? It wasn't the prettiest of seams. I suppose I need more practice.
Last part, sew front and back together, turn right side out and it's done!