Hello Cathy. Welcome to the forum, and congratulations on your decision to embark on this adventure. You will no doubt end up with a camper that is built better than anything you can buy, and you will learn new skills and make new friends along the way.
I started out much the same place as you. I have been a crafter since childhood, and there aren't too many things I haven't tried over my considerable years of "making things," but my building experience was limited to repairs around the house, a treehouse for my grandkids and the renovation of several old sailboats. Working with boats gave me some good experience with fiberglass, and since it was something I knew it played heavily into my build. I have also used boat hardware for some applications in my build because it was what I was familiar with and it works. You will find that skills that you may not even think relevant now (even if it is just the ability to read, understand, and follow directions) will contribute to your confidence and benefit you along the way. The beauty of these little creations is that there is no set in stone formula and each one is unique according to the skill set, imagination and experience each builder brings to the process.
When I first decided I just HAD TO HAVE one of these cool little trailers I was hesitant and nervous also. I mean....honestly, could a woman really do this?? (My husband wasn't all that interested in it in the beginning, although he definitely came around along the way.) Then I came across a build journal written by a young girl named Lydia McElroy who had built a teardrop as her senior project in high school. She used to have a build thread/blog out on the web. I cannot no longer locate that but here is a thread about her on Teardrop Talk.
http://www.forum.teardrops.net/simpleforum_pro.cgi?fid=01&topic_id=1159600751She did this pretty much on her own with some help from her dad. She kept the build basic, her journal was very straightforward and she presented it in such a way that it made me think that anyone could do it. And I think anyone can with just a couple of caveats.
I think you need to have a very basic knowledge of some simple power tools, namely the circular saw, jig saw, router, drill and sander (belt and palm). There are a few others that come in real handy (I learned to use a Kreg jig for my build and can't say enough good about it, and I have resorted to my Dremel a couple of times when nothing else seemed to serve the purpose), but you can get it done with those.
Read, research, and ask questions. There is a lot of information out there, and there are a lot of experienced, skillful and very helpful builders here, and on other sites, who are more than willing to assist you with your build. Draw on their knowledge. There are build journals out on the web that will take you step by step through the process. If you read enough of them, and see many variations you will learn enough to have options, and it will inspire you to have your own ideas. Don't be afraid to ask questions. We've all been there and most people actually enjoy sharing what they have learned with others. Here are a just a few good sites I found helpful. There are also many youtube videos to watch.
http://www.webring.org/hub/teardropper?w=960;rh=http%3A%2F%2Fwww.asolidfoundation.com%2Fdd_shell_1.shtml;rd=1http://www.outbackteardrop.com/http://www.buchfink.com/Patience is a virtue you can't have enough of here. I spent far more time thinking about how I was going to accomplish every task than I did actually doing it. (There are probably a few people who will disagree with this and tell you to just jump in and git er done instead of taking forever like I did.) What I lacked in actual training and experience I made up for by thinking it to death and coming up with my own way (based on the reading and research mentioned above).
Don't let the mistakes and set-backs (and you will surely have some) put a damper on your enthusiasm. Get yourself a moaning chair. A place to sit down, have a cold one, stare at the teardrop and regroup. Unless you literally drop a wrecking ball on it, there probably isn't anything you can do that isn't fixable somehow.
You have one thing to bring to your build that no one else can. It will be yours so you will care about it like no one else. How it is put together will matter to you. Having it be safe behind YOUR car will matter to you. And it will reflect your taste and personality.
There are lots of great designs in the design resources section at the top of this page. Be sure you download the Generic Benroy plans. Even if you are not necessarily interested in the Benroy design, this little guide is invaluable as it gives you the basic 1-2-3 of how things go together and the order of the steps to get it done. Once you understand the concept and the methods, you can apply them to any design you want to build
If I sound like a true believer, I am. This has been such a rewarding experience. The things I have learned, the friends I have made, and now the camper I have to enjoy.....jump on in, the water is FINE.