MySQL Table partition

Hi All,
I NEED SOME ADVISE ON WHAT IS THE BEST WAY TO PARTITION THIS TABLE.

| job_file | CREATE TABLE `job_file` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `job_user_id` int(11) NOT NULL,
  `job_methods_id` int(11) DEFAULT NULL,
  `work_id` int(11) DEFAULT NULL,
  `member_id` int(10) unsigned DEFAULT NULL,
  `subject_uri` text NOT NULL,
  `subject_gram` text,
  `reply` mediumtext,
  `date_entered` datetime NOT NULL,
  `subject_guid` varchar(36) DEFAULT NULL COMMENT ,
  `test_error` tinyint(1) NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`),
  KEY `C_job_methods_job_file` (`job_methods_id`),
  KEY `C_job_user_job_file` (`job_user_id`),
  KEY `C_work_job_job_file` (`work_id`),
  KEY `C_member_job_file` (`member_id`),
  KEY `test_error` (`is_error`),
  KEY `date_entered` (`date_entered`),
  CONSTRAINT `_____C_job_methods_job_file` FOREIGN KEY (`job_methods_id`) REFERENCES `job_methods` (`id`),
  CONSTRAINT `_____C_job_user_job_file` FOREIGN KEY (`job_user_id`) REFERENCES `job_user` (`id`),
  CONSTRAINT `_____C_work_job_file` FOREIGN KEY (`work_id`) REFERENCES `work` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=155289248 DEFAULT CHARSET=utf8 |