Surprise event 25 ! :p

[Biff]

I found 12
I discounted the purple road because of the leaves missing didn't show it.

Dragon tooth
Dragon Ear
leaf on bottom branch
flower stamin or swirl gone.
small mountain peak
Blue Bead on headband
his tooth
leaf on top
elbow spot
pants at knee missing blue fringe
hair on monkey head
pan flute has one more

[Rhiathynn]

1-tooth on dragon
2-ear on dragon
3-leaves on tree root
4-whirlwind on flower
5-tooth on guy
6-tube on flute thing
7-mountain peak in background
8-tuft of hair on monkey's head
9-bead on bandana
10-blue stripe on bottom of pants
11-leaf on top of tree towards edge
12-spots on guy's elbow

so 12 I think, (maybe 13 but i'm not sure if that purple road or root thing is actually shorter in one or just covered by the leaves) (also not sure if the fact that the images are reversed counts)

[Madzik]

I found 11

[sweetpickles]

Using the right hand picture:

Leaf on tree
Bead on Headband
Tuft of hair on little animal on shoulder
Tooth on mouth
Ear of Green Dragon
Mountain peak under dragon's right ear
Tooth on green dragon
Pipe on pan flute
Blue stripe on right leg
Swirl on flower
Leaves on curled tree branch on bottom right

Total 11 (so far)

[Taevamanna]

I found 11

[ElsjeFiederelsje]

12 differences found

A leave on the left hand top
Leaves on the left hand bottom on the curved branche
mountaintop above two trees on left
one dragons ear
one dragons tooth
coulour on trouser
a flower on right botttom
a flute pipe
a tatoo on left lower arm near elbow
animal on shoulder's hair
mens tooth
bead on hairband

I didn't work for me putting an image in...

[misstic56]

I COUNTED 11 MISTAKES.

[1Shaluv1]

8

[ladylizbeth]

I have found 11 so far.

[Seamist]

I say 15