As the authority of the church, the Bishop "confirms" your vows during confirmation. It means he witnesses your vows and welcomes you as a young adult in the church. Your sponsor also witnesses but has no authority to confirm your vows.
No, you would need to be confirmed to be a sponsor.
When you are confirmed in your faith
In the sacrament of Confirmation, the Holy Ghost is given to the person confirmed.
Confirmation is the agreement to be a soldier of Christ.
When you are confirmed in your faith
A Confirmation sponsor is a confirmed Catholic in good standing who mentors the Confiramation candidate before he or she is confirmed. Traditionally the Confirmation sponsor is a Godparent (connecting Baptism to Confirmation), but does not have to be.
Confirmation Confirmed
As a faithful member of the Church.
No there was no need what so ever for Jesus to be confirmed.
Confirmation may be completed anytime after baptism, but it is a grave sin to put it off; so, if you are not already confirmed, no matter how old you are, you should set about being confirmed.
The word for the person to be confirmed is a confirmand.
The traditional age of confirmation is 13.