Need photoshop help. please?!

I have an image of the ugly stepsisters from Cinderella. I want the stepsisters cut out of the picture and filled in with black so it's like a silhouette

does that make sense? Would anyone be willing? I don't have the image online anywhere but I could email it

Thanks a bunch, in advanced

ETA: nevermind.. my MIL just found iron on patches

Thanks