I want to make a brush like this:
I tried but I only got here. How can I make start and end or the Art brush the same as the calligraphy brush?
You may modify the Art Brush definition and do some experiments with the "Stretch Between Guides" settings.
Use the Width tool to create a width profile for that brush stroke
Almost there, I think. Any ideas for this step?
I'd still recommend to take a look at the "Stretch Between Guides" settings.
But as per your last sketch, you may just have to use separate paths instead of one continuous path to get the desired look.
Is there a way to use width profile with "Calligraphic Brush"?