I found a walking foot to be helpful. I just have a crummy plastic singer one and it was fine.
I made the piece without a zipper, then pinned and machine basted the zipper on ( i left the zipper an inch or two long at the top and trimmed it later), then cut the 1/2 zip, then finished sewing the zipper on (zig zag). The top of the zipper is just folded down and sewed. The bottom of the zipper has a piece of grosgrain folded over sewed on as reinforcement and as a zipstop. I put the zipper on the outside because I figured it’d be more comfy as a baselayer that way. I used a zigzag stitch with enough zigzag such that when I stretched the material the thread wasn’t being stressed too hard. I found the sleeves a little short, so the second one I made had 1.5 inches length added vs the pattern. The collar was a little tight with my fabric so I seam ripped the first collar off and made it an inch longer. I double sewed all seams, though don’t think it was really necessary. I sewed a little chin-zip guard on. And I just did a 3/4″ hem on the sleeves and bottom.
But honestly, fleece materials are so forgiving it is hard to mess it up. The first version I goofed in a bunch of places and it is still totally serviceable but the second one came out quite nice.


