When writing an architecture cover letter, it's important to highlight skills that are relevant to the specific job and demonstrate your expertise in the field. Some essential skills to consider highlighting include architectural design, drafting and modeling software proficiency (such as AutoCAD, Revit, or SketchUp), project management, problem-solving abilities, attention to detail, communication skills, and knowledge of sustainable design practices. Tailor the skills you emphasize based on the requirements of the position you're applying for.