Good Pics, but you can use your A200 even better, it's a better camera than it looks from it's price, seems like you have used 18-70mm kit lens for all those pics, indoor shots of flames are good but fireworks you should have used slower shutter speed to let it capture the dramatic effect of-course you can try this next time. For outdoor shots 18-70mm kit lens is not an ideal lens when you want shoot at telescopic end and try to capture the detail of object far off.