I recently played a drawn caro-kann game where I thought was not clear. Analysis help is appreciated. 

I like 11...h5 better for you.  His kingside is overextended.  There is no reason to think black won't come out better.  Yeah, you double some pawns, but you have some dynamic attacking possibilities.  

I actually think you look a bit better after move 19.  His queen is chained to that knight.  You could do something like Rc8 followed by pushing your a pawn up the board.  The knight on f4 looks weak.  Your king is much safer.

After 20. Rfe1, move your rook back to f8, followed by f5, the queen is nicely positioned to swing over.  It definitely looks super drawish after the rooks are exchanged.  I think you underestimated your attacking possibilities.

thanks. maybe I should be more dynamic!

ran it through some stuff. the first line is a theory(chessbase opening book)

The bishop move  5.Bd3..Bg4?! may have been premature.