1 . pre-production
1) idea sketch&detailed workflow planning

2. production
2-1 base material&connecting displacement node
Get > primitive > grid
geometry > u , v 50 or more

material > phong > illumination > diffuse

material > phong > transparency / reflection

select grid > press 7
make render tree structure like below

where can we find color to alpha node ?
the answer is below

double click image node > define projection ( planar xz )

drag q

good !
2-2 finetuning the displacement mapping effect
geometry approximation

displacement > subdivision step = 0

0 > 1 or 2 until you are satisfied

and fillay adjusting a few parameter render
2-3 finetuning the rendering effect
1. aliasing

2. optimization

3. final gathering (by default)

Let's take a physical practice ! sitting all day long in front of computer do harm for your health and your mind.
keep on exercising !!
