You have done great! It can take a while to learn how to make good edits, so no worries at all. As long as you're leaving the map better than you found it, you're making a good impact. 

There are lots of resources on the OSM wiki and there's also a forum where you can chat about making edits too.

I went ahead and did some more edits in your vicinity. I discovered that the USGS 3D Imagery actually has a really good outline of the grading of roads and riverbeds of stream. Using this, I'm able to see the roads through the trees way better. It'll help improve my mapping.