I like the design. Except "Elvis Tribute Artist" needs to read as one phrase instead of being separated like it is here. Maybe it could be ELVIS TRIBUTE ARTIST across the top curve, HALL OF FAME through the center, and AND MUSEUM along the bottom curve.
Also the glasses / shades don't look quite right. They are not Elvis style. They look too much like RayBan. Elvis wore more the aviator style. The hair also needs a bit of sideburn. Overall the illustration needs bit of work.
The microphone is cool, so maybe develop a version with only microphone (no guitars or Elvis head).
Thanks.