Those maps look very prefabbed and too less thought for detail. Are you sure you have what it takes to create a mod? Perhaps it's better to start out small and slowly get the hang of mapping. As you're just getting started, I wouldn't advise you to start a mod already.
Texture artists, modellers and coders aren't likely to jump right into one of the many beginner-mods. Most of these mods never make it so you won't attract good artists anyway.
I don't say this to discourage you, rather to warn you. Don't start with too heavy projects, you'll soon find yourself being overwhelmed. It's best to start with small maps, expand to larger maps or even to mappacks, get a hang of the other areas of modding (texturing, modelling, coding)... just one step at a time...
Oh, and a little tip: look at other, good, mappers. It's easier to learn things when you do so. It may also inspire you.
Have you checked out Nightwatch already? If not, you really should search for that mod, just to see what a total modification takes... that mod is in production for well over 2 years, with almost 30 people working on it. Still sure you want to start with a mod immediatly?