Panel lining is a simple but effective technique that can add depth and detail to your Gunpla model and make it look more realistic. By filling in the recessed lines, or "panels," on the model with a fine-tipped pen or brush and enamel or gundam marker, you can define the different parts of the model and make it stand
HOW TO PANEL LINE GUNDAMS: THE LAZY ARSE WAY! - PANEL LINING
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Anyone can learn how to build great looking 'Gundam' model kits