This is No Mere Lip Service!
This is a great tutorial on taking care of your lips while doing a makeup, so that even unevenness in the upper and lower lips does not show up prominently. Carefully follow the instructions one by one since lips are very sensitive and you do not want to end up hurting yourself in any way. Starting with the foundation, till the tips on using light colors to make your lips look better and the use of gloss as suggested, the illustration, on this tutorial, is quite interesting and useful. Surely, you will want to try these and give your lips that extra oomph factor.
All tips here-> Makeup Artist School