Recently, I went on a tech-sketch binge. Believe it or not, this is my favorite part of the process in fashion design; it's where ideas come to life, colors, patterns, textures look more like real-life, and when you move forward with an idea or not.
Yes, it's nice to have a finished garment from your mind right in front of you, but I love front and back technical sketches so much. All done in Illustrator and Photoshop by me. All are fictional garments except for one... see if you can spot which one!