Prompt: Generate comprehensive technical patterns for a short-sleeved men's shirt in MEDIUM BLUE AND WHITE CHECKS fabric, ensuring a balanced 50/50 distribution of white and blue squares of the same size. The design should showcase TWO FRONT POCKETS and exclude the Valencia collar. Provide precise dimensions and proportions for each component, including 2 back darts, a 3cm finished placket, and the collar button. Present the patterns on a white background, depicted on a sewing mannequin to allow a complete view of the garment, in a flat representation without the inclusion of images featuring actual garments or human models