plz help me how to rewinding and which type of winding  

call me 9407136574

Which motor is it - I mean model name? How many stator poles and magnets does your motor have? I assume its an outrunner.

Star gives more Torque but at the expense of lower rpm. Delta gives more rpm but has lower torque.

Go through these links for theory and more info :

http://www.rcindia.org/electric-power/can-this-bldc-motor-be-repaired/50/
http://pemclab.cn.nctu.edu.tw/W3lib/confers/IMCSD/Jones-02.imcsd00.pdf
http://www.bavaria-direct.co.za/info/
http://www.instructables.com/id/How-to-Wind-a-12N-14P-Brushless-Outrunner/ (Read comments as well)
https://www.helifreak.com/showthread.php?t=220329
https://en.wikipedia.org/wiki/Outrunner
https://www.rcgroups.com/forums/showthread.php?666877-Rewinding-brushless-motors-WYE-or-Delta





Take your time and go through those links. Hope it helps you.

-Regards