A method of forming a graphic article is described such as a tape or sheet, comprising a PLA-based film. The PLA-based film comprises a semicrystalline polylactic acid polymer; a second polymer such as polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; and plasticizer. The graphic article is typically a tape or sheet that may further comprise a (e.g. pressure sensitive) adhesive and a low adhesion backsize or a release liner. The graphic article can be suitable for various end-uses.