Your home's windows define its appearance to a large extent, and after all, they're its "portal" to the outside world. It makes sense that you would want to pay special attention to this part of your home's design if you want to make it look truly good, and nowadays you have plenty of opportunities for that as well. You just have to reach out and look around the market for windows, and you'll quickly find dozens of companies offering quality products at prices you wouldn't have expected!
You need to have a plan from the beginning though. There are many ways to approach the design of your home's windows, and you need to know exactly what you're trying to achieve, and how you want the place to look. Otherwise, you can easily get swept up in a sea of options once you first poke your head on this market, and you'll end up choosing something that's likely not quite ideal for you.
If you don't have any experience with home design and decoration, you can ask a friend for help who already has expertise in that field. It's important that your windows are chosen in a way that complements the overall design of your home, and not just as a random decision just on the basis that they look good on their own. Many window designs that look very attractive by themselves end up looking a lot worse when they're put next to certain structural and design elements, and you can't really predict that if you don't have some solid knowledge in the field.
Another thing worth paying attention to is that your new windows may have stricter requirements for their maintenance compared to your original ones. That's because some more advanced window frame technologies may require more in-depth cleaning in order to work properly, or perhaps your windows may be coated with a material that doesn't react well to certain cleaning products. In any case, familiarize yourself with the manufacturer's guidelines before attempting your first window washing, and you should avoid any major trouble.
It's not impossible for your new windows to have some flaws which may not be apparent immediately, and can start showing up some time after you've put them into place. You should notify the manufacturer as soon as you've noticed any such problems, so they can respond immediately and possibly send you replacements before your warranty has expired. It can help to take a few pictures of your windows once they're installed so you have some basis for comparison as well, although not strictly necessary, as any good company will know how their windows look when originally installed.
With some attention in your original research, a little bit of taste, and the willingness to live in a fantastic new home, you should soon be able to make your house look nothing like it originally did, all with a change as simple as replacing its windows. Go for it now and you won't regret it at any point!
