I am trying to remove the background from an image in Photoshop, I use the select subject tool and Photoshop selects the subject, since the hair is not selected completely I go to refine selection, once I refine the selection I tap new layer with mask, but in the image there is some area (Foreground) that is still not selected and I need to paint the foreground. I go to paintbrush and select black colour but it does not paint the foreground. What do I need to do ? And even if it does, it does like dust powder, as in it does like in some dust powder form, like dots, not like full solid color. what do I need to do ? What settings do I need yo keep in the Paint Brush Tool (Like Normal, Blend etc) and what do I keep the hardness to ?