We all know first impressions are important. That’s especially true when it comes to your home’s curb appeal. Whether you’re trying to sell your house or just want to make it look its best, landscaping is key. Mark Mariani Greenwich is one of the top landscape designers in the country and he knows a thing or two about curb appeal. “Your landscape is the first thing people see when they pull up to your house,” Mariani says. “It’s important to make a good impression.” Here are his top tips. Stick to a neutral color palette. While you may be tempted to go for an outlandish design with bright colors, sticking…