The only time I ever pull off any model is when I'm following a tutorial

There's a wip Honda Civic model in my deviantart account, which was done by following the Nissan tutorial in the LW site, I only used a different car because I thought that by making it more difficult (by having little room to exactly follow the tutorial) I would learn better. Now that I've submitted my computer project, I've been wanting to get back where I left off in LW.
Unfortunately, I have no idea how to go about modeling. I can't visualize meshes like others can. Any advice on how to 'think' 3D?

I spelled "disappointment" wrong. Pahintulutan ang di-inaasahang nakakahiyang pagkakamaling dulot ng kamangmangan. Have at you.