Step 1: Draw the rectangle And mark the measurements as per the picture.
Note: The 3-0-G-G is the portion to make the Fleets on the sleeve
Step 2: Mark 5 and 4 and join the point.
Step 3: Mark 6. Join 4 and 6
Step 4: Make the point 7. It is the mid point of 4 and 6
Step 5: Make the point 8
Step 6: Make the point 9. Join 4-9-6
Final sleeve shape will be looking like this picture
How to make sleeve band
This steps required to make the sleeve band at the sleeve round [On bicep]
Make rectangular piece with the following measurement
a to b = 1"
b to c = half sleeve round + 1/2"
Click here to see : Stitching normal sleeve