How to sew - Thread button hole

Hi ladies... I would like to share a simple tip on how to sew/make thread button hole. I eager to learn the making of this type button hole when I was in standard 6. My mom taught me and I tried on my school uniform. Stitch type is called 'tali air' or the one that you can apply for stitching applique.

Then she taught how to make 'tikam belut' on the neckline (no picture). I also addicted to that and I tried on my uniform and my sister's kurung. However, I did not use my tikam belut skill anymore. My eyes are aging..(too much sewing activities?...hihi)

p/s: prepare the frame of the button hole using 4 threads (repeat two loops). Then, refer to the first picture. Good luck!!!