Well I think the title says it all. I started working on this last month but it's not finished, and I thought it would be as good a starter as any to work on an autoCAD based tutorial. I'm deciding ho to split this tutorial up but I think I'll divide it into parts and include a screen recording that summarizes everything. In this portion we're going to set up the file for working and then the next part will begin with the actual tracing of the image.
For those unfamiliar with autoCAD don't worry, we need only a limited range of commands to complete this trace, and what can't be accessed via the main menu we can use by typing it in the command line.
For this project I recommend that you have the following:
AutoCAD 2007 - 2010 (tutorial is based on the 2010 release)
Adobe Acrobat, or Bullzip PDF (so we can plot the trace using autoCAD to a more workable format)
Photoshop (for final touches to the finished render)
This is what I'll be finishing.

What I have so far:

Now, before I continue where I left off on this you will obviously need to get a copy of AutoCAD, and be able to get this image into autoCAD once you're ready. For those who don't have it
AutoDesk provides a free 30-day trial of their application, or if you're a student and have a valid school email address they
offer student versions of their software for free with a 13 month license.
I'm assuming that if you're reading through this point you're either in the process of getting the trial or you already have a licensed copy and we can continue from there. Begin by opening autoCAD and creating a new file from the default selected template. Save this new file to a folder of your choice (I suggest a new folder on your desktop). Put the source image you'll be tracing in the same folder as your autoCAD file.
Once you've saved and have your image in the same folder we need to attach it to the CAD file as an external reference file. In the command line at the bottom portion of the screen type in the command
XREF:

and press
ENTER to activate the command. You should see the following tab show up on-screen:

You will see three buttons on the top left part of this window. Click on the one furthest to the left and select
attach image.

Browse for the image file that you placed inside the folder with the autoCAD file, select it and click
open.

The settings as indicated above should be fine for just about any configuration. So all you need to do is click
OkayClick anywhere on the screen and size the picture as you want. If you need to zoom out after inserteing the picture following this procedure in the command line:
Z then
ENTER
A then
ENTER
Basically the commands are
ZOOM and
ALL so that the view zooms out as far as it needs for viewing the content on the file.

Now, we're going to get a few things set up before we move any further. First off we'll be coloring the render using AutoCAD's hatch command and we'll want each of these shades on it's own layer. So in the command line type
LAYER and press ENTER to activate the layer command. A panel should appear when you activate it:


Create a layer using the same names described above with the same line weights. Basically for every different color shade we want a corresponding layer for it. I also make a layer so that I can draw out all of the shade boundaries to make hatching the shades in the places I specifically want possible.
Here's a quick assembly of the above in video format to help clarify the procedures. Next part will be up soon!