Some best tips to Sexy lips:
1. Here's the best bet to setting your lip colour. No matter what the texture of your lipstick is always apply lip balm first to soften and smoothen the skin. If your lips are chapped apply some Vaseline and softly rub your lips with a soft muslin cloth to remove dead skin leaving your lips looking healthier.
2. The first step to a fashionable mouth is to define your lipline, if you want to make your lips appear smaller use colours like dark berry or chocolate shades which make lips look thinner also apply the liner on the inner boundary of your natural line. On the contrary if you want a
more fuller look recreate your lipline slightly above your natural line and use a sheeny or sheer moisturising lip stick in warm coal, rosy pink or a bronzed caramel tone. Make even more of your mouth by applying little gloss in the middle of your lower lip.
3. After a proper definition apply your lipstick with a lip brush this gives a more even and lasting look to the lipstick, then blot with a tissue. You can dust some powder through a single ply tissue to achieve a sophisticated matte look or reapply another coat of lipstick for intense colour.
4. If you always land up with lipstick on your teeth than simply put your index finger in your mouth, close your lips around it and slowly pull it out of your mouth. The residue will stick to your finger.
5. The new -look of glossy shimmering lips can be achieved easily by applying a gloss that matches your lipstick colour so it enhances the actual tone as well as add shine. Or think of updating a tired browny lipstick with a lick of shiny gold shimmer- it's instant sun-kissed splendor on your lips.
6. You can also choose a nude shade close to your own skin colouring and apply carefully with a brush all the way to the edges of the lipline and add a new dimension with a touch of sheer gloss for a striking effect for day and night.
7. You can also opt for one of the most versatile, classic and ageless colour red. By tapping your ring finger onto your red lipstick and apply them to your lips by dotting on the colour and then spreading it . Apply sheer gloss to add a touch of class. You can also decrease the voltage of red by applying a nude/natural lipstick as base colour.
General Tips for Lips:
Apply cold cream or moisturizer or lip balm before applying lipstick.
To get natural pink lips apply beet root juice before bed.
Grind rose petals and apply on lips to get smooth pink lips
If you have thinner lips use more neutral lip color.
If you want different shade of lip color mix two or three lipstick colors together and use
as new lip color.
If your face is bumpy, irritate or ruddy, or rash don’t use true red color, till you get normal skin.
Red will show more attention on the skin.
Pale shades makes lip look fuller. 
Apply menthol based lip balm and take an old brush and brush gently on lips
( don’t rub too hard, because lip are very sensitive) to get rid off chapped lips.