Romantic Couple Low-Angle Hand-Heart Gesture Portrait Under Blue Sky Prompt

Use uploaded photos ONLY as identity. My face 100% exact match, no changes. Realistic smartphone lock screen wallpaper, 9:16 vertical. Low-angle shot from below, phone beneath them, medium-wide, upper body visible. One boy & one girl close together, looking down, hands in foreground forming a clear heart, natural casual expressions. Girl in black t-shirt. Outfits exactly same as reference. Open sky background, soft daylight, light clouds. No zoom, no blur, no filters. Raw iPhone realism, 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.