Step #8 for The Cosmo Bag is when your bag finally starts to take shape as a bag… it’s super exciting and the first really rewarding point of this project! We have actually already made all of the major parts for the exterior of the bag except they need to be pieced together. Let’s get oriented… Start by locating one of your exterior main panels with the handles attached, as well as one of the pocketed side panels.
If you’re new to curved seams, I can assure you that yes, the straight edge and the curved edge are going to go together. Let’s start by flipping over the side panel so that we can put them right sides together.
Starting at the top, pin the top corner and work your way all the way down, matching up the edges and pinning them together. You’ll see how the fabric naturally curls inward, just as it should!
At the bottom edge, we’re going to use our seam gauge to measure up a 1/2″ and I like to mark this with my water soluble chalk pencils from Clover. The reason for the half inch mark is that we are going to attach the bottom panel in the next sew along post and we will need that little half inch of fabric for stitching.
Starting at the top, following the seam allowance instructions in Amy Butler’s Style Stitches, stitch to the line we just marked and back stitch at both ends.
Then we’re going to clip into the seam allowance, being *super careful* to avoid clipping through the line we just stitched! I clip about every half inch or so.
Now we’re going to attach the other side of this side panel to the other exterior main panel, following all the same mini-steps we just did, above. After that, you’re going to take your other remaining side panel and attach it first to the other side of the first exterior main panel and then the other side of the second exterior main panel.
The last thing we need to do for this step is to press open all of our clipped seams. I find it really helpful to use my tailor’s ham for this because it fills in the curve of the seam and I move it down as I work my way down from one end to the other.
When you hold up your work, you should see your bag taking shape! This is my favorite step of the entire project because it’s the first time we really get to see the shape of the final project. Next time, we’ll add a bottom panel and actually be able to put something in the shell. Love it!
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