Use very light applications of paint. Quick light strokes, not heavy slow ones. Paint will very quickly build up and gunk up your creation.
If you were to paint a single square foot of canvass, start at the top going side to side in a typewriter fashion, taking about a single second to a second and a half to cover each horizontal quadrant.
Sppppppt.... Spppppppt...... Sppppppt....... Sppppppt
Not
Sppppppppppppppppppppppppppt
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