yep. I'm having a lot of fun on this book - I've been using the pen tool a lot in Photoshop - a tool I generally reserved for Illustrator work, and felt was superfluous in Photoshop while graphic designing... I find it very useful for long sweeping lines that should be continuous and smooth - I mostly use it for my contour lines. Pictured above are some pages from Metal Locus.
2 days ago