Looking to turn half chest piece into a full one

Hey, I'm new to this site but hopefully I can get some feedback. Last year I got a new school-ish city skyline tattooed on the right side of my chest, only the outline so far. But after some thinking I really wanna turn it into a full chest piece...but I'm lost with any ideas to make it look symmetrical as well as what to put in the middle. Heres a link with a picture of it: http://s14.photobucket.com/albums/a303/Joshmosh666/?action=view¤t=DSCN07221.jpg As I mentioned, what would go in the center of my chest is where I need the most ideas in as I would like something to go up towards my throat. When it comes to tattoo ideas I have no creativity, and I will talk to the guy who tattooed it on me but I want to go with some fresh ideas to have more to work with. Thanks in advance.

My original post was really vague as to what I may want. I was thinking maybe a lighthouse in the middle because I like them a lot, but one stuck in the middle might not look that great. Also I'm looking for ideas that will go with the city idea, neo-traditional style and colorful. As for the whole background I was thinking blue sky with light rays...possibly with the lighthouse idea.