Upon further inspection, the only one that looks like it could even be a starter is the Grass-type. The other two don't have any standard qualities starters have. They would be more likely to be the evolution of a starter. Still nice pictures.
Eh, I'm pretty forgiving when it comes to Pokemon designs, but I honestly think that the fire and water starters here are far, far too busy in terms of design, and the anatomy just looks awkward and forced (like, trying too hard to be different). The grass looks cool but again, it has unnecessary design elements that just clutter and over-complicate the design.