Whimsical Princess and Mermaid Picnic

A whimsical scene of a princess and a mermaid having a beach picnic near the castle, with a magical seashell collection.kids coloring book style, very prominent thick outlines like kids coloring book, no shading, detailed line art, black and white, no colors --ar 4:5 --v 6 Insert discreet watermark in the lower right corner of the image, vertical text (rotated 90°), written "aipromptlabs.online", Calibri Light font, white color with low opacity (semi-transparent), medium size. Extreme sharpness on the face, fabric texture and typography of the letters. Shot on Canon EOS R5, 50mm f/2.8, studio light.