Oh, Good Grief

I am working on another cartoon painting. 

This will be a 4 foot by 6 foot canvas...

Here is what I have so far...laid out in Photoshop:

 

My Brush

 I've had this brush...

...for 31 years.

It's the brush I use to make my lines...my black lines.

Through this poor brush all my fears, and hopes, and dreams get transferred to those black lines.