One of the most common mistakes people make when taking pictures of fish, wildflowers or whatever is that they stand too far away from their subject. Even a cheap, disposable camera can do an adequate job in the right setting. A better bet is to compose your photograph carefully before snapping away. Get a fishing rod or a net in the photo. Shoot plenty of pictures.
Film is cheap.
Try different angles. If you're shooting wildlife, try to get the eye of the animal in focus. I realize now that taking good pictures isn't altogether a matter of being in the right place at the right time, it's thinking about your shot in advance and knowing your equipment.