The absolute biggest “do” in logo design is ensuring it actually meets retail and legal standards, because an artistic logo is completely useless if it gets your product banned from store shelves. While designers waste time arguing about minimalism or gradients, the real nightmare begins when your logo fails brand compliance on actual physical packaging. If your logo has poor contrast, is placed too close to mandatory nutrition facts, or violates trademark and retail guidelines, major retailers will reject your entire shipment instantly. The ultimate rule is to design with strict retail and legal compliance in mind from day one, rather than trying to fix a regulatory disaster right before you send the files to the printer.