This looks pretty nice! The color and shading makes it look like Kirby's shining! Adding music notes and a star were nice additions.
Kirby does look like he's being loud, but I feel like he could look a little louder if there were more music notes or if they were bigger.
The background makes me think of a stage! I don't know why. That just interests me considering Mike Kirby has been seen on stages before! Did you do that on purpose? Whether you did or not, that's a nice touch!
Since you prefer white Kirby I was going to suggest using white for this picture instead, but after further thought I think pink works better for these colors.