Here is a great tutorial to build a cover over an existing range hood. In some homes range hoods can be dated looking, and take the look and feel of the kitchen space down. By adding a cover and some detail molding you can completely transform the look of your kitchen space, for a fraction of the cost of the expensive custom range covers and hood inserts.
Our original space looked like this, certainly something that's still pretty and has character, however I personally always wanted more of a custom look for over our large stove. When we originally renovated this kitchen a custom wood vent hood just wasn’t in out budget, and this one work and has been great ever, but I’m always looking to make changes!