Planning is one of the most important parts of shooting landscapes bearing in mind that you might not get satisfying results after the first session.
Start from planning where and when to go. It is important to know when you want to shoot and what light you need. The best is to give yourself more time for preparing your gear and scouting the location. If you can choose the full-frame camera body as it is the best for landscape photography. Think about what lens do you want to use. The wide-angle lens is considered by professionals the best lens for landscapes. Sometimes the telephoto lens will be the best for landscape photography. You will be shooting with high f-stops to capture the sharp details of the foreground and background. Do not forget your filters: polarizers and ND filters. Graduated filters are also a must-have in your bag. Sometimes we don't want a filter to affect the whole image. Pack your tripod to make sure you capture a sharp image if you shoot at a slow shutter speed what is very common in this type of photography. Remember that to achieve high f-stop and low ISO you will have to use a slow shutter speed.
Consider the return to the location with the new ideas for new angles and approaches to the subject.
Use a raw format that contains more information than jpg. The histogram will help you to set up perfect exposure. Don't forget about the rule of thirds or Fibonacci sequence whatever works better for your shot. You can consider minimalism and usage of leading lines. This helps to bring a viewer attention to the picture. The blurry movement or flares also gives a character to the picture. Make sure the horizon is in a straight line across and where the line is in composition.