To keep it steadyish get as close to your subject as possible and shoot as wideangle as possible to minimize shake. Check your white balance , especially if you are in mixed lighted rooms. White balance is essentially what colour your camera thinks is white. Some cameras have buttons for this i.e. indoors, outdoors etc. This all matters because not all light is the same colour.
Lights have different colour temperatures.
Your eyes can sort this information out, but the camera tends to make everything look all one colour if its on the wrong setting. The camera goes 'Hey, loads of white I better set my exposure to that', so when you come to look at your footage all you can see it a silhouette of your subject and you can hardly see their face. Avoid fingers near the lens or long hair draping into shot. Equally be careful when shooting through glass, mirrors or shiny objects not to catch a view of yourself. Use a polarizing filter to cut down on any reflection.