First things first: keep your motivation! It's awesome to have motivated, creative people on here. Next, go through the armory and long at what we have. If you can't find what you want there are a ton of resources in the form of files, people, and links that will help you.
After that get building! It can be tedious at times, but I promise the results are worth it. Start a build thread as well, and keep it updated. That way you can glean off the experience and advice of others, keep a record of how you did what, help with deployment if you choose to go that way, and (most important) boost your post count so you can join a regiment!
Looking forward to your build, my friend!