Here’s an easy guide on how to reduce the noise of your photo. Please take note that I used the Filter option and Noise Reduction Tool, not the Smart Blur. But you can also use that if you want. I just prefer to use the Noise Reduction rather than the Smart Blur tool.
So here’s the original photo. As you can see, some parts of the photo looks like rough and full of texture on it.
Let’s start the photoscape tutorial now!!!
So photoscape also have this feature where you can add texture/s to your photos. Let me show you how to add textures for a photo. Just like what I’ve made for this one. 
First, I clear skin texture of the original photo by reducing the noise on it. As you can see, you can choose from Low to High Clear Skin. I used the Low one for this photo because too much reducing of noise might cause blurring the picture and it might get ruined. 
Simply Photoscape 