I have a Canon EOS 1200D DSLR and I want to use it to film myself playing the guitar. It doesn't have a flip screen I can use to see how I'm positioned in the picture. Here's the component diagram.
To take shots, I use a tripod that closely resembles this one.
How would you go about setting up a "monitor" for yourself so you can see what you look like in the shot? Is there something like - just spitballing here - a special mirror that you can attach to the camera body that reflects the image on screen back to you?