While I'm in creative searches, I'm trying different brushes for line

For example, I took some picture from Pinterest
The essence is in the lines, not the style

✨The first brush is thinner, less soft, not dynamic
!First Art

✨The second is the softest of the three, dynamic in transparency, not in narrowing, I'm still thinking about putting it into use
!Second art

✨The third is hard, dynamic, I've been using them for the last few months
Moreover, there are two brushes — they differ in the degree of narrowing 👀
!Third art

And I also liked how the line looks in color with transitions
I really thought about this technique

P.s. now I have a lot of questions for the smearers — my hand doesn't fit on other people's lines at all o_o