Constructive comments would be easier to make if we knew what the rest of your layout looked like, including the location of the edge of your benchwork, the space for aisles, and any other objects (doors, windows, appliances, supports, etc.) that might interfere with our suggestions. The first comment above about a "run around" track (which could also be used as an "arrival" and/or "departure" track) and a yard lead are both pretty standard items required for a yard to work well.
That is, of course, if you plan to use the yard to sort cars and make up trains. If you only plan to store train "sets" that will enter and leave the layout intact, then what you have will probably work just fine. One other caution; be sure to leave enough room between tracks for full scale hands to reach in and fix the derailments that are bound to occur occasionally. Some of your spacing looks pretty tight.
Chuck
