Step Four: Preparing the Pattern
At this point you should have a pattern and have made an educated guess as to which size you are going to cut out. You should also have the fabric, a Sharpie marking pen, something to cut with (I prefer a rotary cutter and a mat), a tape measure, scotch tape, tissue paper, and a dressmaker's curve. You should also have a basic leotard pattern, properly fitted, from the previous step.
A dressmaker's curve is indispensable! If you don't know what one is, this is what mine looks like:

Get one if you don't have one!
Start out by separating the patten pieces you will be using from the rest of the pattern. If you are doing a princess-seamed dress, you should have four pieces: front, side front, back and side back. Some of the pieces will be marked with a waistline, some won't. If you're lucky, they ALL will be, but if not it helps to guesstimate where the waistline is on all pieces.
Let's say that your side back piece is not marked with a waistline, but the back piece is. Lay the pattern piece down, and lay the back piece next to it, oriented so that the tops are facing in the same direction and so that the notches (the pointy bits that stick out past the cutting line) are near each other. Now, measure up from the center of the notch for the size you are cutting to the waistline on the center back piece. The waistline on the side back piece will fall just about the same number of inches up from the matching notch on the side back piece. I hope the following picture will help:

Now that you've marked the waistlines, it also helps to mark the hiplines. Start with your back piece. To find the hipline, lay the back pattern
piece from your leotard on the table. Now lay the back pattern piece from your dress over it, matching up the waistlines. Now trace over the hipline on the leotard pattern so as to transfer it to the dress pattern piece, as such:

Having these markings will help when it comes time to "flare" out the pattern piece to create the fullness in the skirt if you are making a dress from long panels with no godets. (Godets are the triangles of fabric that you sometimes see inserted into ballgown skirts.)
I guess I should back up here...I started writing these thinking I would discuss making a dress without godets, but it just so happens that the dress I'm working on requires godets. Sorry if this gets confusing...but anyway, if you are making a dress with godets then you probably should have started from a straight "sheath" style princess-seamed dress in order to get the right shape for the dress before the godets are inserted. If you are not making godets then you can start from any princess-seamed pattern and then flare out the panels for the required fullness.
I will briefly discuss flaring out the panels, but have no pictures of this step.
(1) Adjust the length of the pattern on the "lengthen or shorten here" lines so that the pattern is about 2 inches shorter from the waist to the hem as the "waist to floor" measurement.
(2) Find the center of the waistline on
the pattern piece. Extend that line to the hem, and mark it.
(3) In general, panel cut dresses are about 14-20 feet around the hem these days. Let's use 16 feet for this example, 'cause it's easy on the math. To get a 16 foot hem with an 8 panel dress, you will need to make sure the bottom of each panel is about 2 feet wide. So, measure out one foot in each direction from that mark you just made on the hem. At this point you may notice that the lines you are drawing extened past the edge of the pattern tissue. Use tape and your extra tissue paper to add on so that you can draw the lines you need.
(4) Now connect the new seam line you just marked back up to the rest of the dress. Most people look best when the dress is flared out from the hips or slightly lower. Say you want to flare the dress out from the hips...so connect the hip line where it intersects the edge of the pattern with the mark you just made.
(5) You'll see that you'll get an angle rather than a smooth curve at the hipline. Use the dressmaker's curve to smooth this out.
Ok, now you've flared out the dress. For those of you not doing this, please rejoin me as I continue on :-)
If you haven't already done so, adjust your pattern for length as described in step #1, above.
The next step -- and this is optional but I do this to preserve the original pattern -- is to tape some sheets of tissue paper together and trace a new copy of your altered pattern, in the size you will be using. You will use this copy to cut out the fabric. Don't forget to mark any notches, darts, dots, or other important pattern markings when making the tracing.
You should now be ready to cut out the underdress (if you're doing godets) or the main dress.
It is very important when cutting out to make sure that you lay out the pattern pieces so that the stretchiest direction of the fabric goes ACROSS the body. Also, if you are cutting on velvet, make sure the nap lays flat from top to bottom on all pieces. What is nap? Pet the velvet...you'll see it stands up if you pet it one way and lays down if you pet it the other. You want the nap to lay down flat if you pet from what would be the top of the pattern piece to the bottom.
Cut everything out, making sure to follow the notches for your size. After you've cut, keep each piece with its pattern piece so that you can properly identify the pieces when you start to sew.
Laura
[ 01-09-2002: Message edited by: Laura La Gassa ]