Without any excitation manipulate your penis to erection. You have to hold the penis in your right hand lightly and maassage it gently in forward and backward fashion to attain the erection. This should be mechanical not sensual. It would take time to erect, since there is no sexual imagination involved in it. Once it is erected fully. Apply little more pressure on the shaft of the penis and massage it for one to two minutes. You have to keep this totally mechanical. After that hold the shaft pull gently forward and release back 50 times. Your pulling forces make the changes in your penis anatomy.
After which you need to relax in supine position for 5 minutes and feel the pain on your thighs, hips and genitals. This is extremely beneficial for your sex organs. This would reduce your perineal fat and your penis would grow healthy for good blood circulation.