When Transfiguring, it is important to make firm and decisive wand movements. Do not wiggle or twirl your wand unnecessarily, or the Transfiguration will certainly be unsuccessful.
Form a clear mental picture of the object you are hoping to create before attempting a Transfiguring spell.
Beginners should say the spell clearly. More advanced wizards do not need to say the spell aloud.
Incomplete Transfigurations are difficult to put right, but you must attempt to do so. Leaving the head of a rabbit on a footstool is irresponsible and dangerous. Say ‘Reparifarge!’ and the object or creature should return to its natural state.
Larger creatures are difficult to Transfigure except by skilled and powerful wizards. Know your limits.
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