I see you've gotten better with the Trax Editor, good for you.
Here's another variation that gives you more access to the middle by extending the "yard" to a peninsula off to one side of the room. You'll still have access all around the layout, but you won't be able to walk around it.
The dead-end spur at the bottom served no real purpose other than to store a train, so I turned it into a passing siding.
I also straightened out the spurs in the middle, though I think you'll find you can't store much more than an engine and maybe 2 cars on them. To help, I also expanded the inside oval a bit.