How to scale well?

My suggestion would be to draw a rough frame first. When you just start on one side and move to the other all sorts of distortions can happen.

Its kind of like a stick figure, i put dots where the joints will be, draw the spine and drop a circle for the head. Then I flesh out the body or just do the lines on top of it. This can help you not only make sure everything will fit in the frame, but it will help with positioning your figure a lot. It only takes a few seconds but can really pay off.

Sometimes you dont have time to erase all your guide-lines, but its not the end of the world. If you do a white background try the eraser, which is just a light yellow... as those are the two most similar colors and its really hard to tell if you accidentally leave some in.

I start with color blobs first then clothes blobs second, then put in shading after. I'm trying to break my habit of using black outlines for everything since it makes it look too rough

Start with the heads as these are usually the most important, then add clothing backgrounds and when you're done with that start to shade the drawing.

I almost always start with eyes and build the face and head from there and so on.

Important bit first, everything else is optional.

Scaling is easy! Simply look at my Iron Man drawing here:

http://drawception.com/viewgame/jBKM6dz7q8/krillin-destructodisks-at-ironman/

See how ginormous his head is? Don't do that!

@The_Lemur_King lol. My problem is my heads will be slightly left / right / or too high. Like my red riding hood here: http://drawception.com/pub/panels/2012/6-11/YbGygdz4X6-2.png I guess deadpool got to her.

Never do detail work before you have a rough of everything you want to have in the frame. That will save you time by ensuring what you want fits in frame.

Also, the color blob method is definitely the easiest way to get what you want down. Rough it out and then use the eraser.