One Idea for a horror Movie

My Idea for a horror movie is for there to be an old lady who is really sweet and nice who lives in a small cottage in the middle of the countryside. The setting for the cottage will be in the woods down a deserted track so it will give the scary feel to it. The first shot will be of the women sowing, the lighting is dark and with only a few lamps, there are shadows and then the camera to a young little girl walking down the lane, there is tension with the music I will use and, as it cuts back to the women inside the cottage we see what she is sowing its, a young child which she has stuff. There will be high angle shots to show this and also the pace of the editing will be slow. She is sitting next to a fire place and just rocking back and forth, there is then another cut to the girl walking up the path you can see that she is coming to the house. Then we cut back to the women she has finished sowing and places the stuffed child on the mantelpiece, we can see that there are hundreds of stuffed children with heavy make up so they look like dolls. Then there’s a cut to the girl who is approaching the house you can see she is scared. The tension builds as she goes to knock on the door. The old lady opens this and pleasantly says come in with a big smile on her face. She looks out of the door either way closes it and we just hear this scream.