Hello, indifas. I'm the facebook developer and ready to start your project, please send me the detailed specification.
Regarding the technologies we will use - this will be a flash because we already have implemented the similar functionality with flash: user uploads the photo from pc - chooses the text(in your case - kisses) - has ability to move/drag the text/kisses over the image - then saves the new image and get redirected to the front page with other images, and also there is a button with share on wall with newly created image.
The price was set in the case when application design will be done by your side.
Hope for successful cooperation.