Contact: hands and object
Both hands should touch the object's surface, with fingers wrapping around or pressing against it. Fingers that vanish into the object, or an object floating a little in front of the palms, are the most common giveaways.
Image trend
The Big Thing Effect aims for an unedited phone snapshot, so the illusion breaks on small physical mistakes rather than on style. Open the result at full size and work through these checks in order before you download.

Both hands should touch the object's surface, with fingers wrapping around or pressing against it. Fingers that vanish into the object, or an object floating a little in front of the palms, are the most common giveaways.
A giant object in daylight should throw a shadow onto your body or the pavement, falling the same way as the shadows of the buildings and passers-by. A bright object with no shadow at all tends to look pasted in.
Compare the object's colour, case and logo position with your object photo, then compare your face and outfit with your own photo. If the object drifts, reshoot it alone on a plain surface; if your face drifts, use a sharper, front-lit photo of yourself and make a new image.
Hold your phone, your ice-cream, your coffee. Absurdly huge. Add a clear photo for each of the 2 slots; the look is already set.
A clear photo of you with your upper body visible.
A photo of the thing you want giant: your phone, an ice-cream, a coffee cup, sneakers.
Upload a clear photo of yourself, upper body in frame.
Upload the thing you want blown up to giant size.
About a minute later you have a street photo of you holding it.
Save the image and share it anywhere.
The colours, the case, the shape. The giant version is built from your own photo of it.
Daylight, a real street and believable shadows, so the scale gag lands instead of looking cut and pasted.
Your face, hair and outfit carry over from your photo.
The object is made oversized, while you hold it in a street-photo scene. Upload your own photo in the person slot and a separate photo of the item in the object slot. This is a giant-object scale effect, rather than a scene where you become a giant towering over a city.
Two: one photo of you and one photo of the object you want giant. Both are needed.
Your photos are used to make your image. Only upload photos of yourself, or of people who have agreed to it.
Check your plan's terms for what you can do with generated images. They apply to your result.
About a minute. You can leave the page; the finished Big Thing Effect image is saved to your assets.
Anything with a clear shape: phones, ice-cream cones, cups, sneakers, bags. Simple, well-lit photos give the cleanest result.
Pick a premise, choose the right photo, and turn one finished image into a post worth sharing.
Giant object photo ideas for the Big Thing Effect: pick an object with a story, photograph it cleanly, write an honest caption and check scale before you post.
Giant object AI photos, miniature-you food shots, giant-phone prompts and giant-person edits compared, and where the Big Thing Effect fits among them.
One selfie, one object, about a minute. Then watch your friends ask how you did it.