We have recently been working with a program called Photopea. It is an application that allows you to edit and modify pictures however you want. You can remove things you don't want in a picture or add things you do want. If you add something to your image, you also have to match the background to make it look as real as possible. Color and tone are very important and blending to make your altered image believable. Here I have the original picture (left), and the altered image (right). I completely removed the car, edited the train's background, and blended it with the night sky to make it seem like it was there in the first place.