There are so many choices for creating a beautiful and interesting backsplash that it can be overwhelming when you are trying to decide on one for your project. Here are a few things that can help narrow it down for you:
Be Inspired - Find the "thing" in your space that you absolutely love and draw your inspiration from that. It might be a faucet or something in your countertop. Maybe you have a sink that you would like to stand out by choosing an accent color that goes with your sink. It could even be a paint color that you want to bring out. If the backsplash has an element with something you love, then you should be happy with your choice for years to come.
Budget Control - Just like anything else, the cost of your backsplash will depend on the product you use and how much of an area you will be adding that product to. In your space you can use a variety of products and it still look cohesive. If you love an ornate tile, but it would be too much in your entire area you want to have a backsplash, then use it as an accent tile in a small area and a less costly and more plain tile that will go with it everywhere else. A backsplash's main purpose is to protect the wall from water, grease or food stains. A multitude of products can be used to make that happen, so use your imagination along with your inspiration to find the product you love and that fits into your budget.
Be Subtle - Even if you love something, there can still be too much of a good thing. Be subtle with your style because a backsplash will have a lot of repetition. A little break in that can be a good thing. If you want an intense wow moment, you can still have that with just having it in a smaller space.
Be Consistent - Make sure your material for your backsplash goes with the character of the space. If you have a traditional kitchen an ultra modern backsplash may not go well in the space. If your space is ultra modern, using a rustic backsplash might make the whole space look "off" so be consistent with your design choices.
A backsplash really does serve a purpose, but it doesn't have to be boring, dull, expensive or difficult to add. Find what you love and see what you can do to update your space in a way that you will continue to love for years to come.