With a little practice, you can easily draw eyes in an anime or manga style. You can use these eyes in any image, and they go well with the realistic cartoon style.
Step 1. Draw a small curved line for the upper eyelid of the eye, then add the eyelashes
After that, draw the lower eyelid.
Step 2. Connect the two eyelids with two curved lines on the left and right of the eye
Step 3. Draw a "bowl" at the top to create emphasis and light reflections
Step 4. Draw a small circle at the bottom of the "bowl" to emphasize the emphasis
Step 5. Draw a big black circle as the pupil of the eye
Add shadows, then color your eye image. Finished!