You have now time to just take a brush pick black or white color, and fix your artwork the digital way. I also crop the black because I want to avoid black pixels on my lines. When you scan paper, you usually get a little mountain in the histogram on the white part (right) to clean. Open the levels, Filter > Adjust > Levels and move the little black triangle cursor where the histogram graph start to show datas and clean all the white-grey noise. Now, to remove all the blue in our artwork, call the Filter > Adjust > Desaturate, and use the 'Max' option in the list. here : "RGB->Blue only" is my name for this preset ). You can also rename the item with a right-click (eg. Press 'Edit Presets' on the top-right corner. Protip : Accelerate your workflow, save a preset for your filters the next time you need to use them. By doing this, you'll merge the blue datas of your sketch into this ocean of blue and so, sort of removing them. Open Filter > Adjust > Color Adjustement curves, and flatten the channel RED and GREEN. I added over the screenshot here under green line to show you the composition lines I'm looking for. This lines helps me to setup a better cropping. Then, I select the crop tool, and in the tool options I activate the 'Thirds' Decoration. I rotate my Image with Image > Rotate > Rotate image 90° to the right. The raw scanned file is available at the end of this tutorial. The only modifications I made on my Krita install is the usage of a dark theme and for the presets my latest brushkit. I open my file in Krita (version 2.8.5 from the Kubuntu update ppa). I can setup Xsane to just grab all the surface of the scanner, and save them as PNG 300dpi in color automatically on my disk. You can notice on my screenshot my super compact dark windows border theme for Xfce. I scan on my Xubuntu 14.04 Linux desktop with Xsane, from the default package. Pixels are too big, stylus too far from the surface, and stylus nib impact this glass at 5mm over the real surface. Note : my Cintiq 21UX don't allow me to draw with this same precision. I 'ink' my drawing with Stabilo lead pencil 0.5mm B, it's soft on my Bristol paper and allow me dark and light grey variations. With a bright sketch, it's easier to see the rendering of your dark pencil lines. The purpose of this step is simple : make the sketch line easier to remove with Krita later, because they will be less dark and also bring comfort to my inking process. Pentel blue lines are really hard to erase, so you don't risk to loose a part of the drawing definitely anyway. With my kneaded eraser, I soft erase my blue sketch. The goal is not to make a perfect blue sketch, then to just overwrite each one of lines. I need to let room for still getting a bit of freedom on the next step. I'm doing my best to build the main volumes. I keep drawing with my blue pencil, and add details. My gesture are large, and I handle the pen also differently than usual to not draw with the wrist or finger, but involve the whole arm in the gesture. You can see I trace large arc and keep the whole things undetailed. I tested also many other brands, and the Pentel are the one who suit more my taste and drawing style. I keep them very light and subtle, with minimal pressure on my blue pen. I take my reference on the side of my desk and with a new sheet of paper I start drawing guidelines. It's certainly a classic composition, or something a bit cliché for a run and jump pose but I wanted to see this one with more details. On this session (illustration under), a little thumbnail had my attention. I do that to be in sync with my volumes, and also break the stress to draw badly later on the final sheet. It is doodling, something you'll keep for yourself your visual notes. It's not meant to look like the good sketch you'll put into a book. I usually draw facial expression, then poses and sometime thumbnails. I start with a sheet of A4 random tiny sketches. In the last part, I'll show how to tint the lines, and make them transparent to be ready to receive a full color work later. In the second part, we will scan the lines, and clean them in Krita to keep only the pencil artwork. In the first part of the tutorial, I'll show you my workflow for sketching, and 'inking' with pencil. You'll see all the step I use for drawing, scanning and cleaning my traditional line-art when I use this technique on my webcomic Pepper&Carrot. This is a tutorial about the "traditional to digital" topic. Update: Spanish version available on Chalo Blogg.
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