sketching/drawing help

[funkO_snacK]

Ok, I have been drawing all my life, most of my drawings been cartoons. I stopped drawing a while back and recently picked up a pencil and started doodling. At this moment, I realized something, I SUCK! I looked up some websites and found this one and realized that concept art and sketching is what i was really shooting for. Since I am just transitioning from cartooning to sketching/concept art i could use some help
PLEASE POST TIPS !

[hyphen]

post some art to let the folks know where you're at. it's hard to give tips when the people don't know how high your current caliber of art is.

[funkO_snacK]

Well, I don't have a scanner.

[Fozzybar]

The most important thing:

Don't post the same thread twice...

Maybe you've a Digital Camera or something...