@ All images were shot with 4K UHD video. If you want to watch high definition 4K then click settings at lower-right corner of your screen – Choose a 4K 2160p at quality. (Desktop)
This is normal latte art by using a latte art pen(etching).
If you don’t have a latte art pen, you can replace it as a drill or a toothpick.
I give a name ‘Twister’ because it looks like a tornado.