The document discusses different techniques for street art, including spray paint, stencils, liquid paints, murals, tiles, LED lighting, sculptures, posters, installations, Lego art, origami, and 3D art. Spray paint allows for quick coverage but mistakes cannot be fixed, while stencils ensure accuracy but require more preparation time. Liquid paints allow for detailed, colorful work but take more time. Murals, tiles, sculptures, installations, origami and 3D art showcase creativity but some techniques may be more time-consuming or expensive than others. Overall the document evaluates the advantages and disadvantages of various street art forms.