1. have enviroment picture background ready in photoshop
2. get at least 5 leek photos
3. copy each leeks and paste it to environment photo
4. ctrl and t to rotate and if some leek picture to too big, shrink it
5. once you place each leeks on the grass, erase in scribble form on the bottom of the leek in a size of below 10 to make it seem like it's covered by grass.
6. then you did it, make sure to give credit because, this is a reference to Hatsune Miku.