Take your photo in in the light box with a clean white background
Adjust the light balance/exposure on the camera app to make your images brighter.
Try to avoid dark shadows and adjust the brightness or exposure of your image
Choose a good angle that makes your model look amazing. Try a low down lens angle so that the camera looks up to the model.
Set up a new canvas and choose your best photo or favourite images
Make sure that you have edited your photo so it looks the best it can be with a clean white background.
make sure that you use layers when adding effects, shadows or including textboxes.