Yeah, what beherith said.
Don't get discouraged.
Practice, practice, practice.
Keep trying, don't expect to get anything right on your first try.
Be willing to learn, and listen to what other people say.
Some people will be mean and yell at you, some will troll you. Take it in your stride, be above the dumber members of the crowd.
Don't be afraid to ask for help.
Be nice and try your best to use proper English.
You may want to work on something else to brush up on your skills before tackling a big project.
Never give up!
My earliest models looked like this:
My newer stuff is a marked improvement:
You get both better and faster as you go along.
Best wishes!
Oh yeah,
PS: I, too use Blender. Are you using version 2.49 or 2,5? Either way, the mirror modifier in the modifiers menu can helop you make things symmetrical.