Ultra-realistic 4:5 cinematic action shot of the subject based on the uploaded reference image, with strict identity preservation of facial structure and features.

Full-body dynamic pose of the subject riding an oversized red merle Australian Shepherd at high speed; subject leaning slightly forward, both hands gripping the dog’s fur near the shoulders like reins, legs bent and positioned on either side.

Wide open laughing expression, energetic and playful mood.

Outfit: black-and-white striped t-shirt, black pants, and black-and-white sneakers.

The oversized Australian Shepherd is mid-stride, powerful and athletic, with one front leg lifted; detailed red merle coat (white, tan, reddish-brown patterns), fur flowing with motion; dust and sand particles flying around for dynamic movement.

Environment: outdoor dry savanna with warm tones, blurred trees in the background (shallow depth of field).

Lighting: natural sunlight, high contrast, golden hour tones.

Style: sharp focus on subject and dog, motion blur in background, ultra-detailed textures, cinematic composition, 8K resolution.