how to apply four layers of shade....

[hard as snails]

1 create and fill your shape
2 select shape,then select styles new,name your style(maybe big shade),select fill colour then in effect 1 apply shading (i leave the default colour but set offset to 20 click ok,then go to effect 2 change offset to 20,turn dial 180 degrees (choose lighter colour like a highlighting colour) click ok
3 for line width choose 5 and soft edge, save this style.
4 again select your shape,styles new,name your style(maybe small shade?),
keep fill colour the same then in effect 1 again apply shading(lighten the default colour you can leave the offset the same)again choose effect 2 choose shading turn the dial 180 degrees and leave offset the same but choose a much lighter colur than you did in step 2 click ok
5 for line width chose a valuse smaller than 5 such as 1 or 2 and soft edge,save this style
6 select your shape and apply both styles to your shape hide edges if need be
7 you know have four layers of shade two which are highlights and two of shade