Vision: Well first, you saved the image as a .png instead of a .jpeg, so it looks much clearer than images with the .jpeg, and that's good. The background is strange, however. The trees wouldn't be in a straight line like that, I don't think.
Originality: Well, it's a dog walking through a forest. But a unique looking one, I suppose. And Breezy's design is definitely original, I really like her design.
Technique: I like how you put in the details, the scribbled lines on everything. You shaded the trees, but not the rest of the things in the picture, like Breezy. You could shade her in to make her stand out.
Impact: The background is made of quite dull colours, but Breezy with her lighter colours brightens up the picture! I think you need to work on anatomy a bit. You know how dog anatomy looks in general, but here are some tutorials to help you with it: [link] [link] And there are many more tutorials.
This is one of your best pictures yet, I think. You just need to work a bit on anatomy and don't forget to shade some things in. :3