Thanks for the sample, katers. It would be good to see the EXIF data so we know what your ISO and shutter speed were, but this photo still helps. If I understand correctly, you want to see texture of the stucco on the walls? For that, lighting is going to make a big difference. You need shadows to really see texture. That means some light coming from the side. I also think you're going to need closer, detail shots to really show it well. Our brains do a lot of visual data juggling to help us see things that the camera isn't necessarily able to capture. Part of the photographer's challenge is to figure out ways to make things more obvious that the camera might not capture well. In the case of subtle textures, I think lighting is going to make a big difference for you.

I also think I see some significant noise / grain in this photo. That's likely because you're shooting indoors in low light in an auto setting. If that's the case, then your camera probably automatically chose a high sensitivity setting to help brighten up the scene. The problem with that is high sensitivity always means more noise. And more noise will obscure fine details like the stucco you want to show. Someone already suggested a tripod to help steady the camera. That's a great idea. In fact, I think a tripod is mandatory for the kind of photos you're trying to take. It will also make it possible for you to use the lowest ISO settings and slow shutter speeds, thereby getting sharper, more detailed photos - even in low light. A new camera will also help with that. But even if you do buy a new camera, you should still be using a tripod.