Looks good! Id try to cut some cards. Generally speaking, you want to play with the minimum number of cards, 60. This gives you the best chance of drawing your best card or the card that you need in a given situation.

I'd consider making Blightwidow one of the cuts. Generally speaking you want a bunch of creatures to have infect or none of them. It's awkward if you get someone up to 9 poison and then have them kill your only infect creature.

I think your deck could use a bit more ramp like Karametra's Acolyte to power out your big creatures. Things like Llanowar Elves, Somberwald Sage, etc.