Extraction Tutorial

When i select alpha 1 in the extraction mode nothing happends and i can use the fill tool, what am I doing wrong? I do exactly as it says :(

[00Daddio]

Odds are MrCracker that you did not stroke the path or the settings for your brush was not set to "BLACK" 4px at 90% hardness. Go back to your created path and select it then click the stoke path button.