Yes, you can! You may layer your photo with another image such as company logo to watermark your images.

To do this, upload your photo to open the Photo Editor and click on Image:

adding_images_in_photo_editor.png

Select User Image to upload a photo:

adding_user_image.png

Click Upload to select the photo that you want:

upload_image.png

Drag the uploaded image to the photo you wish to watermark and place it to the desired area:

watermarked_photo.png

And you're done!