Being a good UFC fighter takes a long time because you have to train each day without stopping.If the President of UFC Dana White recognizes you and comes to watch a couple of your fights and is proud, of the way you handle your opponents and the way you move around.He could ask if you want a contract to sign for UFC.
If you want to earn a Title shot which is having a go at being a UFC Champ is by Showing them you want this fight and that you can beat your opponents.Being a UFC champion is lots of pressure because it would be the first time being a world champion.Having to much pressure on yourself means you could lose your belt,but if you take your time and have faith in yourself and won't have to much pressure.
There you have it how to be a good UFC fighter.
Making sure you are going to every training and eating healthy food not food with lots of calories.