def paste_image(background_img, img_to_paste, x, y):
    """Will paste image on a given background

    Parameters:
    :param background_img: the img which will be served as the background
    (load it from load_img)
    :param img_to_paste: the image to paste on the background (load it from load_img)
    :param x: the x position in which to paste the image
    :param y: the y position in which to paste the image
    """
    background_img.paste(img_to_paste, (int(x), int(y)), img_to_paste)
