Hi @rajkharwa! Thank you very much for your interest in my opinion on your drawing.
Realism is very well achieved in your drawing due to the good use of tonal values. You clearly have confidence with pencils. Congratulations!
I like the expressive realism of your drawing.
However, I can't judge your drawing based on how similar it might be to the reference image, since you didn't attach it. Although the drawing is very realistic looking and well executed, I have noticed a tendency to leave the entire left side of the drawing (the right side of the character) lower. The eyebrows are well balanced in relation to the face, but the left eye in the drawing is noticeably lower, as are the left ear, the left side of the nose, and the left corner of the mouth. I suppose those dark spots on the cheek and chin represent certain scars.
If these observations are in your character of reference, you can consider your drawing as very well achieved. If not, I hope these observations are useful to you.

I have noticed the deformation of your drawing due to the incorrect way of taking the photo. You should always take care of the good framing of your drawings. Perhaps the observations I made to your drawing are a consequence of this mistake of yours.

Have a nice day!