Odd Mario Scenes part 2 of 2

This is the other half of the scenes.
For first half--http://www.sheezyart.com/view/637560/

I'm reading from left to right, top to bottom.
11. (SMW1) Mario feeds his mushroom craving.
12. (SMB2) A key room, with two guards on duty. One's in plain sight, but...
13. (SMKT) Someone slipped on a banana peel on a Donut Plains track. SPLASH
14. (SMB3) Mario stares at the end of a big tank cannon. A bomb-omb acts as a witness.
15. (SM64) In Wet-Dry World, Mario is ready to toss... whatever that is... somewhere.
16. (SMW1) Dry Bones and Thwomp wait. It's the sixth castle, and Mario just started a new game.
17. (SMW2) Yoshi's about to touch fuzzy and get dizzy.
18. (SMRPG) Pyrosphere from Barrel Volcano. For the record, I can't draw good lava.
19. (SMB1) My tribute to the hardest enemy in Mario history: The Hammer Bro. I could finish SMB in five minutes, but I'll still get hit at least once by one of these.
20. (????) Bowser lies face down, being smashed to death by... Luigi? This is my favorite scene, and it took the longest of the 20.