I see you sold a muppet puppet in the past... very frog-like, and this one screams ernie, nice construction but I'm unsure about the design..
Ah yes, I just followed the link to the other puppet. I think that gold3nrul3 is correct on this one. Ernie is a charcater that I see many people inadvertantly come very close to in design. However with the Frog puppet it is obviously too close to Kermit to be an original design.
I would echo what gold3nrul3 is saying and I would encourage you to take your nicely developing building skills and come up with unique designs of your own. Or else this whole thread will become a copyright thread (let's not turn this thread into another copyright thread. Pleeeeeaaaaaase).
As I said before I like your building skills, they are developing nicely. I know the best learning I have done as a builder has come from building unique characters. I want to be someone who is positive in encouraging you to try it as well. I know that I would sooner bit on an original puppet of yours that I like, than a puppet that I have seen before (copyright issues aside).
All the best papapuppet. Keep building!