Looking good man, I like your choice of cars...there are a ton of websites for model building that you can pick up some great tips from. I got to the point where I was running wires and fuel lines and stuff. Have a bunch of kits sitting in storage of various cars, mostly Datsun but haven't built anything new (plastic models) in a few years, kind of got back into RC with my son. Have a few cars, trucks and currently building a hydroplane from scratch.
Keep it up man, it is a good relaxing hobby and if you get a chance try and make it out to a model show. You will see some incredible work, and also a great source of inspiration.