Painting by numbers

Number of times my boss looked at what I was doing and threw up his hands and said, "Whoa, whoa, wait...": 5
Number of goofs: countless.
Rude remarks to client: 0
Rude remarks while client wasn't listening: 43
Times I painted the wrong color on the wall: 2
Times I tried to pour one color of paint into a bucket full of another paint: 1
Times I felt like I was getting in the way: 10
Years of experience I have painting: 5+
Years of experience my boss would estimate I have: 0
Number of times I thought, "What does it matter, a bookshelf is going in front of this wall anyway." 15
Times I used the word "sabotage": 2

I am a useless painter. I don't know why I don't get it but I end up using too much paint or too little paint. It's frustrating because I know I'm actually messing up the job. It's simple, you put the paint where there is no paint. But there are all these lines and when I go over the lines I start to see new lines and so on. It never ends. And soon the paint is so thin I see the paint underneath...and what was the name of that song I was listening to the other day, was it Footsteps or Horizontal or...
"Whoa, whoa, what are you doing?"
"What?"
"Oggy, you're painting the curtain."
"But you said the whole wall."
"But that's the curtain."
"It's connected to the wall."
"Just...go stand over there...be careful the paint tray...ok quick go get a rag...quick...watch the wet brush!"
I'm hopeless. When it comes to painting I am illiterate. A menace.