Things required
1)Servos(I used standard Futaba S3003 servos)
2)Fiberglass sheet
3)Cutting tools
4)Flame Torch or gas stove for Bending
5)Araldite

First cut two strips of fiberglass measuring 2.5 cm X 26 cm

For the camera tray cut a 3.5 cm X 23 cm
As my camera's base measured 10 cm X 2.5 cm I divided the strips accordingly. After marking it I bent the strips by heating it over a gas burner.


For bolting down the servos cut 2 pieces of 2 cm X 5 cm and drill the holes for bolting the servos


For joining the fiberglass I used Quick Dry Araldite




The weight is not clearly visible but the total weight was 184g(including the servos)

good job Himadri Roy...
good luck

Nice work, but that is acrylic sheet, not fibreglass. 

 Nicely done but then its not fiberglass its acrylic sheet. (as point by Pravesh)

Nicely done..  Video of it in action please?  Are you gonna control this from the flight controller itself or do you have something else in mind?

Thank you Gunnu, Pravesh Sir, Satya Sir and Medicineman! And sorry for the blunder(naming acrylic as fiberglass) 
@medicineman: Yes I will post the video shortly. Currently I am testing this out with the FC, planing to write my own code and make the stabilizing system!

Here's a video of the Gimbal Working!
www.youtube.com/watch?v=bYko17JAuY8

Pretty cool. Nicely done 

Nice. Which FC are you using?

It is a acrylic or fiber glass .I think it is acrylic sheet

@ashok sir:Thank you sir! I am using Kk2.1.5
@arvind sir: Its acrylic actually..I made a mistake by writing fiberglass!

Completed  my gimbal today ...thank you very much Himadri sir....
Big shoutout to Devansan Andrews for the help as well