Low Poly Animal

I’m working in a game, I’m creating the models in blender, one of these models is a dog pug, I’ve tried different things to make it, but I just can’t make it good, I’m a begginer in Blender 2.79, How would you do something like this, or could you give me some tips to make it?. Here are some pics:

Here is a tutorial that covers the basics:

I would say that it isn’t for an absolute beginner, but mainly covers modelling. One critique is that he doesn’t use the add-on that displays his key presses, but he does a pretty good job of telling the viewer which keys he is using as he works.