I've been trying to hang pictures up in my house. There's not a single plasterboard wall so I bought a drill and watched a YouTube video. It looks so easy in the video but the two times I've tried all I've achieved is two really wide holes that don't hold a single rawl plug. My cordless drill bounces up and down endlessly. I'm quite strong so I don't know why I'm having this issue. Please help. I refuse to admit defeat until I've learnt.