When you're turning on Gameboy Camera, hold Feed and there will be a small picture and message.

Print Pics From Album B
In Split Mode, split all 4 of one picture in Album B and select create. It will now be in Album A.

New Pictures
Pic B18: Old-fashion pic of Mario
Place 1st on Run! Run! Run! and raise the flag by repeatedly pressing A at the Awards screen.

Pic B19: Pic of Luigi & Princess Peach
Send 20 pictures to another gameboy.

Pic B20: Pic of a Lion Head
Receive 20 pictures from another gameboy.

Pic B22: Pic of a Boy & a Flying Saucer Toy
Print 30 pictures.

Pic B23: Pic of a man and a bear playing music
Complete Space Fever II 3 times.

Pic B24: Pic of Little Wario
Complete Space Fever II 3 times.

Pic B25: Japanese Gameboy Art
Complete Space Fever 5 times.

Pic B26: Pic of R.O.B.
Get 500 points on ball.

Pic B27: Pic of Toad
Get 1,000 points on ball.

Extra Game
Get 2,200 points in the space craft game