On most things you did a great job of drawing them, and you even added some subtle shadows in a few places that really make it seem more complete. My one complaint though is that you put that much effort into drawing everything but you cut corners on the lettering and made it flat instead of rounded with the surface of the baseball. It just looks out of place to me to see mostly proper perspective overall except for right there.
drawn in 54 min
drawn in 7 min
drawn in 55 min
p.s.- w00t. go wilson. go red sox.