Before showing the steps to draw the sleeve pattern,we have to do some calculations.Here are the measurements I used earlier for the sleeve in the general template.
Sleeve Length: 6"
Base of Sleeve: 12"
How to take the measurements:
Sleeve length: Measure how long you would like the sleeve to be from the edge of the shoulder where you can feel the joint.
Base of sleeve: Measure around your arm at the point your sleeve length ends.
Sleeve length:Measured Sleeve length + 0.5+1.5[stitching allowance]= 6+0.5+1.5=8
Base of Sleeve= base of sleeve measurement /2+0.5=12/2+0.5=6.5