Open up your picture in PhotoFiltre.
Go to Filter >> Color >> Grayscale.
Go to Filter >> Artistic >> Ink Outlines.
Go to Adjust >> Replace Color. Now we’ll be replacing the lighter gray first and replacing it with white at 100%.
Go to Adjust >> Replace Color again but this time, we’ll be replacing the black with white at 5%. (The amount that you want to replace is your choice, this is how much I did mine because that’s how thick I wanted my lines.)