How to draw nice vector illustration of Eye Iris Pupil in Adobe Illustrator

Here's a tutorial on how to create an engraved eye illustration from Stock in Adobe Illustrator

Step 1: Create a new document in A4 size.

Step 2:

Create the line stroke by click Line Segment Tool from Tools.

Step 3: Transform Effect

Go to Effect -> Distort&Transform -> Transform

Angle : 7

Copies: 25

Change the color of the strokes to #00A79D

Step 4: Copy and Transform

Go to Effect -> Distort&Transform -> ZigZag

Size: 1.76 mm

Ridges per segment: 4

Points: Smooth

Copy 1: Make a copy of the Stroke (Cmd+C/ Ctrl + C) and Paste in front (Cmd+F / Ctrl+F)

Change the color of the stroke by changing HSB as below.

Continue the same and create 4 copies of original

Step 5:

Select all and go to Object -> Expand Appearance

Then go to Object ->Path -> Simplify
                                              Curve Precision: 69%

Select all and ungroup it (Cmd+Shift+G)/(Ctrl+Shift+G)

Step 6:

Go to Object -> Transform -> Transform Each

Size Horizontal & Vertical: 70%

Angle: 32

Options: Select Transform Objects & Patterns, Random

Press Cmd+G/ Ctrl+G to group all

Step 7:Eye Background Creation

Create a Circle(L) filled with Gradient as below.

Note: Press Shift+Alt for draw a circle from the center

Transparency mode as Hue and adjust the HSB for better color.

Step 8: 

Draw a small circle(L) in the center and apply a below gradient to get a vibrant outline.

Draw another small circles with below gradient and set transparency mode as Screen.

We are now done our vibrant Eye Iris & Pupil. 

I hope you enjoyed the tutorial, and I would be  happy to see your results in the comments below.

Output: