Thanks for the feedback
For the Goomba I looked on the logo here (top-left corner) and decided to go that style intentionally. micro500 used the same style to create Jumpman a few post below (in the youtube video).
The flower has the New Super Mario Bros style because I found it easy to draw and still recognizable (otherwise should had gone with SMB1 style). I didn't attempt to not fill the flower, so I don't know how it would look. But I'll create an alternative version w/o the fill.
Edit:
The Freecell king was just like a joke image :P (Created it because it was simple)
The F-zero images come from F-zero GX. These are the emblems of the characters & that's their look. I created Goroh because of myself & decided to also create Falcon because they are rivals. Like the king above, I created them mostly for myself, they don't have to be used just because they exist (But the F-zero drawings are some of the ones I like the most...).
Yea, it's Cammy and not Aerith.
I didn't put much effort on Sonic and as result some lines didn't look curvy, probably will retouch some details later.