The artstyle is very good and consistent.
For the gameplay part, the patterns were simple, but readable. Smoothing is a sensitive thing for bullet hells : I think it feels good for your game, but it's mabye too strong. The focused/spreading switching was a good add.
Just one thing : there was no reason to stop shooting. You could add some reason to stop shooting sometimes, or make the shooting automatic.
Very catchy music !
Clean itch.io page too ! Good work.