Hello! Welcome to OpenStreetMap. This change looks good. If you'd like to improve it even more this section of roadway seems to have been missed for speed limits and lanes (https://www.openstreetmap.org/way/6352692/history#map=19/47.76216/-122.30766). 

For houses I like to draw the roofline as accurately as possible and make sure to remember you can square the corners with by selecting the outline and hitting 'q'. Tree cover around here can make aerial imagery hard to map from so you're free to use your own knowledge of local buildings to make sure they look nice a crisp.

I've drawn a few more around this one so it isn't all alone ha.