What the hell are you going to play Trostani against? Seems SUPER flimsy, you'd probably be better off playing Vorapede or Silverheart in that slot to just break open any midrange matchup.
Also 4 Selesnya Charms is probably too much. Maybe find room for a Restoration Angel or two somewhere, being able to reset your Silverblade Paladins is pretty good.
I was going to bring in Trostani for the aggro matches but she might not be necessary since this deck beats aggro pretty well anyway.
I've also found Selesnya Charm to be quite valuable. Kills lots of relevant targets with it's exile ability, can make a 2/2 blocker in a pinch, and the +2/+2 and trample can save your dudes and help close out games. I might move some to the board.
I've also
found silverheart to be too slow a lot of the time. Sure getting him out turn four off of gyre sage can be real strong but sometimes he can make your draws clunky. Sigarda comes in from the board for the midrange matchups. She's literally unanswerable for Jund besides ripping bonfire for 5 or blocking with a 5/5 olivia (which is in selesnya charm range). I suppose vampire nighthawk could work too but not many play him nowadays from what i can tell.
I'm thinking about cutting Thalia too, the deck runs too many spells. Her keeping you out of Advent range can hurt.