If you want some ideas to find easyer your mistakes before you use your pen, I sugest you to look your drawing in a mirror. That's maybe looks silly like this, but this is really helpful ^-^ Or you can wait an hour or two before looking your image again ( this is what makes me start to color a wrong drawing many times ... By chance, photoshop is my friend and it's easy to fix a sketch, but not with traditional ).

Any way, this is still a nice start and a lovely idea =D I can't wait to see your new version =3

Yeah, I noticed all my errors. I'm already remaking it, the first thing I noticed was his chest, but once you use pen, well you can't go back. Well I'm still proud of it, my first picture without a reference!

Nice job for a start! And I LOVE the idea! XD

Nice drawing! But you may want to note that Balto's chest is much too big. His tail is also up too high on his back.