I definitely recommend a tripod. For point and shoot though the pics you took are pretty good. The images will look 10 times better once you get a tripod - depending on where you shoot, filters also help. UV I generally keep on at all times as it helps protect the lens and helps reduce haze in certain situations. Polarizers and neutral density are good to have on hand too - you can stack filters to get the right shot. If you really want full control of your images shoot in raw as mentioned above- the adjustments you can make on your PC are great and you do not loose image quality. If you have a Mac, get Aperture.