There's products to help reduce the appearance of scars. I'm not sure what are some good brands but research it and I'm sure you'll find something worth buying. As for using makeup, Studio Gear is great but expensive. Just use one that matches your skin tone.
You should be using silicone sheets to help reduce the scar and any built up scar tissue. This is help even out the area of the scar and reduce the appearance. You can buy these at select drug stores and online. Then you can use mederma waterproof make up. It was specifically developed for people that have scars and burns. There is a color chart to help match your skin tone. It works great!