Do you have a macro mode on your camera? That's the best way to take pictures. It's specifically for focus on close-up subjects. There will be an icon that looks like a flower (at least on Canon and Fuji models) Also, (and I am assuming a digital cam here) use a tripod. When you are focusing on small objects close up like that, your hands are usually too shaking for a clear focus. It's hard enough to snap a moving object, twice as hard as what you are using to snap is moving too!