I believe that there are many people who are posting AI artworks. They should know that AI posting is prohibited. I just got a comment on my artwork "colorful" that it is an AI work. This is not AI. Let me clarify that. The blurry sides you see can maybe due to the blending Because I am in my practice stages. I don't know the effective use of blurry pen in my artworks. I used Ibis paint to make this because it offers various pens like prism-piece pen, scribble pen, neon pen, glitter pen, pointillism pen etc.
The second picture is the use of pointillism pen. About the bubbles that you can see, they are made from neon pen ,soft pen and lower the opacity of colors.