Generate a collage themed around the month of February, reflecting the essence of cinematic style. The collage should comprise elements such as snowflakes, hearts to represent Valentine's Day, a groundhog to symbolize Groundhog Day, and winter clothing. All these elements should have a vintage cinematic color grading, with a touch of film grain for added texture and aesthetic value. Let the overall mood of the collage be akin to a nostalgic, old-school movie scene, capturing the spirit and vibrancy of February in its full glory.