In Fotor's photo editor, you can easily overlay two or more pictures. Please follow the steps in the tutorial video as below.
If you cannot watch the video, follow the steps below to overlay images:
1, Click this link to enter the editing tool: https://www.fotor.com/photo-editor-app/editor/basic
2, Upload an image as a background image.
3. Click the layer button on the uploaded image and select "Add Image Layer".
4, Upload another image to overlay and adjust the size and position of the overlay image to achieve the desired effect.