like everyone else, love the death card. at first glance i thought the sapling was growing from the dead bird (a closer look showed otherwise). If you're still open to suggestions (and the one you showed is not the final version), then i would suggest that little detail - makes the life-from-death transition even more visual.
but the card itself is gorgeous with or without that change.
again, like other people, i also feel the same way about the tower. the tower structure itself is very beautiful (like a Wizard's University!), but perhaps the angle takes away some of the card's "impact." and the predominantly blue sky gives a serene feel (as opposed to something more "charged").
but that's just my 2 cents. in any case, i'm sure this new project of yours will result in yet another well-loved deck.