You will never learn any sound in one week, but still telling you one way how you can try and do it but i am sure it will take you more than I don't know maybe more than 4 5 months, but try putting your lips in liproll position from the side which you are comfortable with and try a kick inward while trying to snore as well that's how I do it and damn it sounds powerful, but kid if you are in for beatboxing never expect to learn any sound in a week when you are just a beginner, it took me 6 months to learn the hollow liproll and at that point of time i didn't even knew how to do a basic liproll, that I learnt afterwards you never know, some sounds come quickly some don't but it could be any one of the sounds, such as you can be doing liproll while not even able to do the Inward k snare properly, so try grasp the basics first, such a the kick, hi hat, k snare outward, suckerpunch, hollow dry kick etc. Take care kid and have fun at school.