Hey chin up dude :D I'm not an expert either, far from it :P It's the fun of the game that matters in the end anyways - And if you have put alot of heart into a build, then thats what counts! Of course it's always nice if others like your work to, but it comes second to the first I wrote :)
Many of the more elaborate builds you see out there (Not my work), are created using a whole array of third-party programs like "Voxbin", "MCEdit", "Voxelsniper", "Worldpaint", "Spritecraft" ect ect. I'm just beginning to explore those programs to help me build some of the really HUGE projects I have in mind :) Fx. I'll soon be releasing a map with a (hopefully) 500x500 block pixelart of my car lol... It's so detailed that you can read the damn licensplate O_o Only problem is the size, Minecraft does'nt like objects that large :P Plus I freezed my laptop 3 times when I rendered the image into a Minecraft compliant file xD (Takes ALOT of memory to render a image with more than 2500x1700 pixels)

Anyways, if you should decide on uploading anything, please let me know so I can give it a try :) I'll want to be sure I'm the first one to give you a thumbs up :)