Hand-Drawn Rainbow Invitation

Create a vibrant hand-drawn invitation with a pastel rainbow arching across the sky, with whimsical hot air balloons floating nearby. Add scattered clouds and birds for charm, leaving a clear area for party details in the center. --ar 2:3 --stylize 250 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.