You can say "Eres bonita".
bonita
You can say "Ella es bonita".
To say, "It looks' in Spanish takes 3 syllables. In English, when you're expressing disgust, the shorter, the more impactful. So it is in Spanish. So rather than say, "It looks," a Spanish speaker would simply say, "EW! How ugly!" And they would say it, ¡Ay! ¡Que feo/a! (depending on whether the thing/person/etc. is masculine or feminine).
Very is said two ways that I know of in spanish: muy and mucho....Ella es muy bonita. ¡muchas gracias! (She is very pretty. Thank you very much!) '(To) vary', on the other hand, is 'variar
su nombre es muy bonito FYI go to http://ets.freetranslation.com/
llevar traje de baño que es muy bonito
mujer bonita
There is no direct translation for "pretty please". Simply say "Por Favor" (please).
You would say "guapa pero gorda".
You can say "Ella es muy bonita".
You shouldn't have to impress a girl to get her, if she's true, then she'll like you for who you are. But compliment her. Say she looks nice, and that she's really very pretty. ^.^