$newfile=ImageCreatefromJpeg("kalyan.jpg");
$backsquare=ImageCreate(250,250);
$black = imagecolorallocate($backsquare, 0x00, 0x00, 0x00);
Imagefilledrectangle ($backsquare, 0,0, 250, 250, $black);
ImageCopy($backsquare, $newfile, 0, 0, 200, 200, 20, 20);
ImageJPEG($backsquare,$newfile);
imagedestroy($backsquare);
where am i wrong here