Make sure that all the information on the receipt is clearly legible such as date, store name and product purchased. Long receipts may be folded to ensure required information is clearly captured.
The receipt is in good condition, well-lit, and centred in the frame on a plain background.
Make sure the receipt is not obscured by shadows or objects.
Make sure the receipt is not damaged and can be read easily.
Make sure your receipt is not significantly tilted towards or away from the camera.