Create a detailed illustration of a woman with a spotted cat on the porch of a seaside cabin. The woman should be depicted in a relaxed pose, perhaps sitting on a chair or standing while gently petting the cat. The cat should have distinctive spots and be comfortably settled near the woman. The porch should include elements like wooden railings, a small table with a cup or a book, and some potted plants. The background should show the seaside with gentle waves, a sandy shore, and a few distant boats or seabirds to add depth to the scene. The overall style should be realistic yet tranquil, capturing the peaceful essence of a quiet moment by the sea. The image should be suitable for coloring, with clear outlines and defined spaces.