We've a good idea of what our sticker art will be, so it's time to sketch them. Key tip here – always ensure you use a jet black, ultra sharp pencil so you produce clean, sharp edges. Smudgy designs don't translate to stickers that well.
Once your sticker art is sketched in pencil, it's time to link them up. Our personal preference is to use tracing paper to re-trace our pencil drawings in pen, improving the drawings where possible. Heavy up the outlines, especially on the underside of the character forms, and add texture and shading where needed.
The next step is to bring the inked work into Photoshop. To do this, you'll need to access a scanner, which will scan each piece of artwork. Alternatively, you can always work in digital form in the pen-&-ink stage, bypassing the need to scan anything in.
Once scanned, open each sticker illustration into Photoshop and choose Image > Mode > Grayscale. Next choose Image > Adjustments > Brightness and Contrast and adjust each image to get a nice crisp line.