I tried the lego software where you can download from the official website. I don't like the software at all. I guess I am old school. I used pencil and paper to make primary designs
My Trackmaster/Tomy/Plarail Photo Gallery Page (over 600+ photos and still under construction)
https://www.flickr.com/photos/183311600@N03/
https://www.flickr.com/photos/183311600@N03/