Demon teeth effect help!

[Hayk Sargsyan]

hi guys, i really need help, i wanna create kinda demoon teeth effect on one of my photos. i red that its pretty simple, but still i need some like precise hints, i'm more in editing pictures than creating something new on them. i have photoshop cs3
here is two example of how that looks

https://lh4.googleusercontent.com/__...notfan2006.jpg
https://lh4.googleusercontent.com/__..._by_sofiDA.jpg

and here is my photo

https://lh3.googleusercontent.com/__...IMG_2065-2.jpg

thanks <3

[Hayk Sargsyan]

maybe, i did that but i kinda messed the upper part, but it's okay (:
i still would like to get some hints haha

https://lh5.googleusercontent.com/__...-22%20copy.jpg

[Carson]

I did a few quickies for you. Idk if you will like them though.

First:




Second: