I find very inspiring this guest post of Alfredo Cabrera on 
Fashionistasdaily. So I decided to share it with you!
We’re very lucky today to have the famed Fashion Illustrator 
Alfredo Cabrera as our contributing editor to show us how to sketch up a
 beautiful fashion illustrations!  He is a seasoned fashion designer 
whom had designed for Geoffrey Beene, Polo Ralph Lauren, Victor Alfaro 
also had lend his talented fashion illustration skills to ad campaigns 
& window displays to Henri Bendel, Missoni, Gianfranco Ferre, Tommy 
Hilfiger, Hollister and many more famous fashion houses.  Today, he gave
 us a step by step tutorial how to draw a beautiful fashion 
illustration! so now get your pencils and color markers ready!
“A good friend suggested that a “How To” post on drawing M
 & B would be of interest. The task: Babes sporting one of Marni’s 
sweet little cocoon suits for fall. I’ll try to go step-by-step.
Step 1: Consider the silhouette and what
 pose will show it best. In this case, hands in the pockets will 
emphasize the cocoon shape and knees together will keep the slim skirt 
slim. Map out the gesture. Be sure she’s standing firmly on the plumb 
line.
Step 2: You aren’t technically “drawing” yet, 
so you don’t want to use contour and fashion sketches should be 
editorial, so SIMPLIFY; block out the masses of the figure with 
geometric shapes.
(Tip: Once you have a well proportioned figure who’s standing 
you can create dozens more by simply changing the placement of the arms 
and leg that isn’t carrying weight. Flip these figures on a Xerox 
machine and you double the number.)
Step 3: Dress the figure. After you’ve drawn a
 zillion of these you can skip step 2 and just start blocking clothing 
shapes on the skeleton. Be mindful of proportion: Where does the jacket 
hem hit? How many skirt lengths fit into a jacket length? Don’t be 
afraid to exaggerate a little to get at the “essence” of the look.
Step 4: Using your penciled shapes as a guide,
 block out the skin, hair and clothing shapes in color. Don’t just “fill
 in” what you’ve sketched but try to build the masses with color. It’s 
ok to go outside the lines or not fill them in to the edge.
Step 5: Build shadows and start adding texture
 in color. Don’t draw in ribs or cables or other texture in pencil, but 
in color- it’s closer to visual truth.
Step 6: Render the tweed. This beautiful Marni
 suit is in a great saffron and black, nubby tweed. We’ve already laid 
down the yellow base color and shadows, now we’ll go in with the side of
 a black Prisma pencil. My trick is to use a textured surface (shown 
peeking from beneath the sketch) to get the slubby look.
Step 7: This is the point to create darker 
shadows, punch up texture and add prints or patterns- BEFORE going in 
with a highlights and holding line. I used a white gel pen for the 
pattern on the sweater and a darker brown marker to add dimension to the
 sunglasses and block out the shoes.
Step 8: Believe it or not, this is where
 the actual drawing comes in. Some artists like a soft look and may use a
 soft pencil for a sensitive thick & thin contour line. I like a 
more graphic look and uses ball point and felt tip pens to get variety 
of line. Don’t outline everything; you may even want to leave some areas
 undrawn. (Baby’s hair never has more than a few curls drawn in.)
Finally, add highlights with a white Prisma pencil and a 
white-out pen, which you can also use to clean up bleeding edges and 
mistakes. Voila! You now know more about Babes than you have any right 
to.