Found this cool new feature on Fotor's website called GoArt where you can apply classic artistic techniques to any photo. There's a lot of styles though some of them you have to pay for. But the free ones are pretty good, too. You can only adjust the intensity, so I had to bring some of them into another photo editor to adjust brightness & contrast. The only draw-back is that the images save at a small size.
This one has a sketch effect. I quite like it. :)