Teach me how to oral!

Ana • i fall for him everyday ❤
Hi, i have  3 years and counting realtion with my boyfriend, but in all that time ive only do oral to him like 3 times, and 2 of them i was drunk! I dont know why, but it embarassed me! And sometimes i wanna do it but i dont know how to tell him! Give me ur opinion and also some tricks and ways to lick ir right! Xo