I learned how to paint with some lessons on Pixiv and by teaching myself. Actually, considering what I draw, I don’t think there are a lot of lessons for such pictures.
Today, I’m going to write about 『how I paint duct tapes』.
First, I put base colors. BTW, I used brawn ones here, but I love steel gray the best!

Then, I use air blush to put a little darker color.

Next, I put darker colors more, and apply it to the base color. I think it is important to put a lot of wrinkles to make tapes real)

After that, I put some white colors on bright parts.

In the end, I paint some wrinkles or shadows white!

By the way, it takes about 15~20 minutes.
I’m going to improve my skills more!