Pentel Pocket Brush: The HARDEST BRUSH TO MASTER?!

I STILL feel like I'm using it wrong? TT The Pentel Pocket Brush is such a great tool used by so many people but I find it so difficult to use!!!
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Materials used:
+ Fabriano watercolor block
+ Prismacolor Col-Erase pencil
+ Sakura KOI watercolors
+ Pentel Pocket Brush Kirari
+ POSCA marker

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▸Music: http://purple-planet.com

Видео Pentel Pocket Brush: The HARDEST BRUSH TO MASTER?! канала Vreecks