Yeah, definitely need to use more than one brush, and I learned that I should keep my mixing board clean between paintings, otherwise everything is muddy, and artist not happy. I was frustrated about this one cause of my muddy paint, but I kinda like it a bit more now, dunno why.
This is our rent-a-condo in Kona, it has this mint-chocolate theme, I was trying to get that light on the wall transition. Also, I started to make uses of all my brushes (up until now I was using one big one, but that got muddy quickly, and so did my paintings.) Small brushes are useful for details, but I try not to get caught up in fixing small things, cause I tend to overwork stuff.