Minifigure customization can be a fun, but dangerous hobby. The customization tutorials and links to tutorials provided here sometimes describe techniques that may be dangerous, such as the use of boiling water, using sharp objects, etc. You shouldn't attempt anything mentioned in the tutorials without adult permission or supervision. The Ugly Duckling at BrickLink and/or the authors of the tutorials are not liable for any injuries or damages incurred from attempting to follow suggestions made in these tutorials.
Please exercise caution and common sense. Have fun and be safe.