Without some revisions I couldn’t give this project a blue ribbon. I can only assume you didn’t take the traditional approach because you wanted to reduce bulk where the two ends are put together. With that in mind, your first step could be to overcast one short end, make your tube and turn it right side out & press. Then stick the unfinished short end inside the end that has been overcast and stitch together. You still have only four layers rather than the six you would have if you had turned under the overcast edge (the traditional way). This is possible because you leave the top stitching, in the round, for your last step. You couldn’t do it this way in your video because you top stitched before putting the ends together.

Love your help in my sewing,you make fun things ,thanks