Asian girl-- saying things are complicated but giving you IOIs and not wanting to give you her number. Obviously shows she is looking for fun but is seeing somone.
I would have made my intent to sex her and not relationship her obvious.
but--you salvaged that to some extent at the end of the night when you got her card.

Brazilian girl, i would have gone for a Venue change with just you and her then led it on for an Fclose.
Somtimes when you are used to being the one making the big plays it can really throw you when somone comes on strong to you.

Always remember what your end game is for the night and work it backwards to get her there.

You are showing good confidence though and its all about enjoying yourself.