Great job so far! I like this style and have plans to build my own. You should see my take on this theme, along with a couple others, coming soon. I am interested to see yours progress. I started with the crappy pink one, so anything will be an improvement.
I would say keep the door lines going all the way to the bottom, and if you are going suicide, try looking at the older versions that have the side vents. I think having both of those opening the same will look good.