User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-213.106.131.123-20131102121941/@comment-1392308-20131103061146

Your question has no answer in the mean time. So far Issei is only able to control the power of the techniques and the direction to a limtied degree (such as bending the attack after it has been fired, inspired by Sirechz's control over the POD). He's able to reduce the destructive force of the Dragon Shot but that's about it so far. He has never been shown to alter its form.