"Kirei desu ne?" means "Pretty, isn't it?"
"Yoi egao desu" means "That's a good smile."
I am pretty. atashi - I wa...desu - am kirei - pretty
kirei means pretty or beautiful. desu can be translated to is. So it probably means "you're beautiful" or "it's beautiful" depending on the context.
usually it is closer to the word"pretty" then "beautiful"... but people sometimes translate it as either
奇麗 (kirei) can either be used to mean "clean/tidy" or "pretty" depending on context. For example, 奇麗な部屋 (kirei na heya) would mean "clean room", but 奇麗な女 (kirei na onna) would mean "pretty woman".
kirei mean beautiful. kirai means hate.
I think you might mean 歌をきれいに歌っています (uta wo kirei ni utatte imasu) which could be used to mean "I'm singing beautifully" in Japanese. The topic (I) would depend almost entirely on context.
'Anata ha kirei (da/desu)' means "You are pretty."
You may say 'eien no utsukushisa,' written: 永遠の美しさ
"Clean" is "kirei" (pronounced: kee-ray).
ここ (koko) is a reference to "this place". For example, ここはきれいです。 (koko ha kirei desu) would mean, this place is clean.
綺麗(きれい) It is pronounced kirei
If you mean 'kirin', with one 'r', it is pronounced "keerin" with the 'i' in its short form.