I primarily use
Krystal's shadow style, then tweak to suit. I'll apply the shadows to all my elements and then go around and tweak/warp individual ones if I need to. If I want the leaves to look further away from the page I'll increase the size and distance settings. To warp a shadow you have to separate the shadow to it's own layer in photoshop then Edit>transform>warp.
I wrote a tutorial on lighter shadows here, after seeing how Krystal's shadows were so natural looking:
https://www.sweetshoppedesigns.com/t...ghten-up-baby/
Honestly though - all the shadow tutorials at SSD are awesome. Very descriptive with steps and settings:
https://www.sweetshoppedesigns.com/t...ory/shadowing/