Let me see....I used to have a Bio_skin, I didn't upload again. How you folding your paper with the yellow tapes.....

How about you try to understand exactly what was your major, not my major before?

You cannot think anything outside your major, can you?

Try to see what I do on the video I had for you in 2019 Winter.

https://youtu.be/s1uxAREOVQM