I just shaved my face for the first time....HELP!?

okay so im a guy and i used an norelco electric razor. when i first started i couldnt really get any hairs but then eventually io did. but i still missed a lot of spots and i cant get them. also literally just above my upper lip i can feel hairs but i cant get them and my upper lip feels numb. i put moistuizer on it which helped a little but not a lot. PLEASE HELP!