YA book about paper mâché dragons coming to life

i remember reading a young adult book about a teen in modern times (1980-1990) who makes a bunch of paper mâché dragons as a hobby and they end up coming to life and attacking him in his home. I have no idea the title or author but I recollect the cover drawn as the main protagonist in a chair as the dragons come find the stairs behind him. Any help!? I have scoured the Internet for l the last 5 years on and off with no luck.