Got the pattern from Lay Sim, modified to the size I desire. Fully hand-sewed.

IMG_0016s

IMG_0017s

Start with a rectangle shape with size you want.  Quilt the 3 layers (Front, batting and lining), preferably cotton.

Followed with sewing bias for both the opening then sew the zip on.

IMG_0004sIMG_0003s

Front & Back

I used the size of 29cm x 24 cm with a 22 cm zip.

IMG_0006s IMG_0007s

After the zip is sewed and fixed.  Do running sticth on the other edges and pull it tight.  Wrap a button or any round cover with fabric matching the color  to close the hole, sewed with small stiches round the button. Do for both sides.

IMG_0019s Make a small round shape with barcullum or cardboard then wrap with fabric and cover the hole inside the case as well.  Do twice for both sides.