am i a candidate for invisalign or lingual braces?

http://i464.photobucket.com/albums/rr4/kttycat111/018.jpg

http://i464.photobucket.com/albums/rr4/kttycat111/020.jpg


i know my teeth are really bad but i've been going to the dentist for a year now and I have fixed all cavities but they are still visually ugly. If i have to get normal braces i will, but i would prefer to have invisalign or lingual bcoz im an adult. Thank you for any help.