You paint the same type of item the same way, with the exact same paint, 20 times and it's flawless. The 21st time you fall to your knees, crying out "Whyyyyyyyyyyyyyyyy?" as you find your project covered in bubbly splotches. You, my friend, are a victim of the dreaded Orange Peel.   What is orange peel? It's a texture that develops on your finished paint that is generally seen as an imperfection. What causes it? Well, there are a host of things: - premature evaporation of thinner - too much humidity - not enough humidity - too hot - too...