Really nice concept, though at first I thought "But there was already a blue frog Pokemon"... but then I realized it was a toad (anyway, it's a blue batrachian). They probably will be very different though since one is a water type and the other was a fighting type.
I dunno, after seeing the weird Samurott, I don't use water-type starters anymore. This one us growing on me, but I still find its white cloud nostrils a bit weird. I think there are far too many frog pkmn to make me want one of these, it doesn't really make them special as a starter. Your rendition of Froakie makes it really cute, and I'll try to picture this version instead when playing the game.