I made a paper pattern. The link is pasted in the explanation column.
Print on A4 paper with [Scale 100％]. Cut the part of the lining that is protruding. Attach Double Cap Rivet Double Cap Rivet’s legs are long, so I put the interlining.(It is okay to sandwich the extra cloth.) Make a handle. Fold it to the center. Create a loop to attach to the D-ring. The top mark is the handle attachment position (3.5mm from center, 1 3/8 “)
The bottom mark will be used when sewing the bottom. Make cuts in 4 places at the same interval. (Mark when sewing the bottom) Attach the D phosphorus group 8.2 cm (3 1/4 “) from the top. Since force is applied to this part, stick a reinforcing tape on the back side.
(Even light interfacing is okay.) This reinforcing tape is thin and does not stretch, so it can be used as a reinforcement to prevent stretch on leather and leather handles. Sold at leather craft shops. Mark the position to attach the string. (4.5 cm + 1.7 cm from the top) Apply reinforcing tape. The position to attach the string is not sewn. Make a notch in the center. (Mark when sewing the bottom) When sewing a straight line and a curved line, it is easier to sew using a magnet ruler. Make a notch with an interval of about 1㎝ (0.4 “) for the seam allowance on the bottom panel. Then, the bottom shape will appear beautiful. Iron the seam allowance for the part where the string is to be attached. Fold 1 cm(0.4 “) and iron. I bought this ironing glove at Daiso.
I use it only occasionally, but it is useful. Like the outer, iron the lining. Attach the string. Make a shoulder strap. Fold it in half and iron it. Fold it to the center.