I am working on a Lilly bud,leaves behind the bud,leaves vary in green hue,deepest green would be my background. Hears the thing, after using select tool on all the leaves I created a new layer, filled it with deep green, dragged it behind the other layers,but did not get what I expected.I got white hard edge select lines.My ? is this, should I have done the background layer first then on a new layer do the selection tool ? My other ? . How do I fade one colour into the other and avoid a sharp transition edge? Thank you