I purchased these books a while ago, seduced by page after page of incredible patterns.

I've had my eye on this one called "Quick Turn", the black dress pattern on the left.

I am without a sewing project at the moment, so I decided to get started on this pattern-drafting project! I'm still a student when it comes to pattern-drafting, but I really enjoy the process --- so here we go!
The instructions begin with a sloper or a moulage. I am using the
moulage I drafted in my French Pattern Drafting class.
Here are the steps for the back:1. Trace out the moulage without adding any seam allowances.
2. Transfer half of the shoulder dart to the armhole. In my case, I transferred a 0.25-inch dart.
3. Transfer the other half of the shoulder dart to the neckline. Draw a new dart point 1.5 cm shorter than than original dart point.
4. To lower and widen the neckline, measure down 2.5 cm at CB; measure in 6.5 cm from the shoulder/armscye edge; and draw a new neckline from CB to the point at 6.5 cm.
5. To extend the shoulder, measure out 7 cm from the shoulder/armscye edge and measure down 1.5 cm from that point. Draw an extended shoulder line.
6. At the armscye/side seam edge, lower by 2 cm and extend out by 1 cm. Redraw the armscye and the side seam.
Here's a photo of the original moulage in plastic over the altered pattern.

The only darts that remain are the one at the neckline, but it is so small that it can probably be eased in, and the waist dart, which was not manipulated at all. The dart that was moved to the armhole has been eased in to the extended shoulder.
Here are the steps for the front:1. Trace out the moulage without adding any seam allowances.
2. Draw a new dart line from the apex to the side seam, 3 cm below the armscye/side seam edge. Draw a new dart line from the apex to the neckline. Draw a new dart line from the apex to the armhole. These lines are shown in red below.

3. The waist dart and the shoulder dart need to be closed and transferred to the three new darts. Transfer 1 cm to the neckline dart. Transfer 3 cm to the armhole dart. Transfer the remaining to the side seam dart.
The only dart that remains is the side seam dart. The neckline dart and armhole dart will be eased in in subsequent steps.
Here's the original moulage in plastic over the paper pattern.

The next steps are to extend the shoulder line and redraw the armscye, and then make a full-size pattern for the front (one that includes both the left and right sides).