i'm more worried about 1-2 though. yes, there are lots of small changes, but as Firn wrote at the thread beginning:

Firn wrote:→ At least 3 BIG changes per stage (wings, animal ears, tails, new pieces of clothing etc.).
It is strongly recommended to add more big changes the higher the stage, as additional details get less noticeable the more complex a Knuffel gets. This means you should try to achieve something like Stage 1 -> Stage 2: 3 Changes, Stage 2 -> Stage 3: 4 Changes, Stage 3 -> Stage 4: 5 Changes, Stage 4 -> Stage 5: 6 Changes

I was gonna wait 'til I had all the lineart done to post again but since you guys are concerned about stages 1-2 I figure I should post now in case I need to make any changes. I'm hoping the chest and tail will count for 2 major changes and a change in color/markings will count as a 3rd. The 5th stage has the unfinished lineart, I still need to add the second wing and the rest of the tails, as well as clean up the sketchy areas. I hope this gives a better idea of the line changes throughout.
I'm also gonna redo the coloring/shading on the first stage since I decided it wouldn't fit well with the rest of the stages.

EDIT: I meant for the new red lines on stage five to be just lowering the eyelids some, but the more I look at it, it kind of looks like closed eyes and now I can't decide what I like better. XP

Hm, ok, how about this? Addition of a bandana that will turn into the scarf on stages 4 and 5, and more dextrous legs that will carry over to all later stages. Think that will do it?

Alrighty, here's the final lineart, unless anyone else has something I should change before I start coloring. :3