Make sure to NEVER lick at you face first of all . Then use cleansing pads to clean your face twice a day. I use oil of olay bit all those brands are good then 3 times a week use a facial scrub. It has tiny bits of hard little pieces of different things in it that will scrub off the darker parts . Then finally every night and every morning after you've washed your face, use a brightening cream. This has a tiny bit of bleach in it and will whiten the darker spots and leave the light area the same. Your drugstore will have the products. No need to spend a lot of money. I can't recommend a product here or they will delete this maybe but go to comments for more advice.
Scrub a half of lemon on your face daily to lighten your skin tone. Lemon is an excellent bleaching agent, and it is very helpful in ironing out the blemishes of the face. Try this home remedy for getting fair skin at home.
Use tomato mashed tomato pulp on your skin to give a pinkish glow to your skin. Tomato is very good for giving you fair skin tone.