I just bought sleeves Fantasy Flight . The packaging says standard size card game - 63.5 x 88 mm . Before buying I measured my cards , who had this exact size . However , I thought the sleeves were a little loose and has the size of 65 x 90 mm it ​​is correct?

how I will shuffle like a pro ?

Sleeves are annoying for shuffling... We will never be able to shuffle at ease. Also which brand of sleeves are you using? I generally go with standard ultra pro's which fit snug on the sides and barely any on the opening end of the sleeve.

I only use the FFG Star Wars sleeves. No issues at all with shuffling or cards fitting.

I bought the FFG sleeves, I use the "table rifle shuffle" http://www.pokerology.com/articles/how-to-shuffle-cards/but with sleeves I cant do it anymore =/

When shuffling a sleeved deck, I use this technique. It's effectively a riffle shuffle that's easier on both the sleeves and the cards.

Thank you D. Knight Sevus! Was all I needed!

Very glad that I could help.