to fix the noses on Catharina's textures, I like to use the clone tool in photoshop, using a round soft brush, set the pressure to around 50% (depending on how bad it is) and then gently clone the white spots of with a cloned spot from nearby. Doing it this way give a perfect effect for me. I also fix other areas the same way, such as the lips, but with the lips I use a sharper brush with super soft pressure and slowly brush over the parts I need to fix. The clone tool in photoshop is perfect for fixing almost anything on textures, you just need to learn how soft or hard to press, give it a try :)