Dare to be creative, there are no exact rules for mixing textures.
Choose textures that complement each other, try different patterns that are matching. If you stick to a limited color palette you will have the freedom to play with different kind of textures. This does not mean you have to stay monochromatic, which might be a comfort zone for some of us. You can use neutral colors to give stability to your look, or you can choose two or three colors that work together, or you can use neutrals and one solid color to pop up the mix.
Curiosity and courage combined with the right amount of talent, knowledge and confidence can get you to the “WOW” effect by mixing textures. Take a risk and try something different with your styling. Put together a polish look combining pieces that you normally wouldn’t, in this way you can come up with a very unique look.