the walking is the hardest thing to do with dslr. look on google image "steady dslr".
It's easy to build by yourself, and it can really helps and solve most of the "shaking" problem of any film
basically, you fix your dslr on top, you hold it with the grip of the "steady" thing, and you have some weight that counter / balance the vibration you can have. It lift any shaking.
Walking scene that was "shaky" become steady, smooth, and visually you can concentrate on the video without being disturb by the shaking.
Remember that movie can be demoralizing, but if you hold, you can achieve some awesome work.