Were you at a dance on your pic
"El baile" means "the dance".
You are gorgeous in this photo
What is he or she wearing in the photo?
Look at my tango pic.
Informal - Haz un baile comico en clase Formal -Haga un baile comico en clase
¿Cuál eres tú en la foto? - informal ¿Cuál es usted en la foto? - formal
You most likely want to say "you look good in this photo", but as written, it is more like "You watch well in this photo". A better way would be to say "Te ves bien en esta foto".
How many people are in the picture (photo)?
Do you have a picture/photo in your in [pag]? Pag is not a word in Spanish. pag. is slang or short for pagina, which in your context I think would mean webpage
gracias por tu comentario en mi foto
Eres: -guapo/a, -bonito/a -bello/a -lindo/a
digo = I say/tell vivo = alive or I live ahy (hay?) = there is/are la = the de = of l(a?) foto = the photo de perfil = profile or side-view que esta en = which is in playera = fisherman/woman eres tu? = are you? Make of that what you will!