Which one is mine?

Definately the second (on the right)... why?

The pose of the front right leg looks more natural, for a start.
Second, the shading is more prominant on the second 'bloom', giving the whole image a lighter tone.
Finally, the head looks much more proportional to the body - the head of the left looks to large.

-FP

EDIT:

I thought you were asking which was better... my bad!

Nintendo's is on the right, for the reasons above.

Yours is on the left. The leaves aren't curled. That's really all I got, other than the colors.

Although I have been looking at it for 10 minutes. Nice Work.

Left.
I'm a pokemon nerd. The colours are different and there's no shading on the petals. It's also outlined in black all the way around. Pokemon sprites generally use a darker colour of the colour it's closest to to outline. Rather than explain it (it's complicated to explain), I'll show you. I'll use the petals because it's the most drastic difference.


Yours is the one on the left, outlined completely in black. The right uses a darker colour to outline to prevent it looking too thick. Pokemon sprites have black outlines in places where light isn't reaching it and the shading is at its darkest.

Also Pokemon sprites don't employ dithering as good as you.

And just to be picky it's spelt Venusaur.

Woah thanks for all this CC been great, I just needed to know if it was easily distinguishable which one was mine, without any direct reference about which was which. Thanks guys so much

left
why?
I know your style

Left

Cos I can recognize the pokemon sprites

left,
and btw
that just blew my mind =]

It's a nice pixel, but yours is obviously the left one. Pokemon always uses bright and unsaturated colors. Your colors are far too saturated in my opinion. But it's nice. Not something I'd be able to make that easily.

Nice...