This will show you how to make quick and easy pixel font, white with a black stroke.
Load your sig/graphic.
Do 'text tool' and pick a good pixel font.
Use Silkscreen if you don't have any.
http://www.dafont.com/en/font.php?file=silkscreenChange your font to these settings:
Type your font.
Right click on the font layer, and go to blending options.
Put these settings:
There, you now have a simple, quick and easy pixel font.