TUTORIAL_ Make your picture 'smooth'

EDIT!! : There is perhaps a way to do this in Gimp. Although it's not likely surface blur, it's.. somewhat the same? Just go to the top bar, click filter> blur> selective gaussian blur! Adjust it however you like c:



Alright, a tutorial! A few people has asked me how I make my picture smooth, so here it is! This is a very simple task to do, so I'm
pretty sure many of you can accomplish this. If you're not interested, hey at LEAST try


Both on Photoshop and Paint.net; Just go to surface blur.

(c)bobosaur

PLEAASE. PLEASE comment below, give me some suggestions on which tutorial should I make based on.
Any questions? I will be gladly to answer.

Program I used:
Gimp 2.6 -to make this tutorial-
Paint -the regular and OLD one-