How smooth or make round a shape like this?

[spawn]

Hi everybody.

I found this image on internet through http://images.google.com

I thought it was easy to me to draw the basic shape of this cartoon house, I made a first shape using SubD and Vertex tools to make a shape like this:

Using SubD I get this result (the one is far away from what I’m looking for):

If I try to do it with Round Corner Extension, I get an error:

I wonder how I can make it look smooth and make its edges look rounded,

I attach the file if it would be necessary: cartoon_house2.skp (82.1 KB)

Thanks in advance.

[TheOnlyAaron]

You were close with SubD! Use the Crease function on the edges. Set the top and bottom to 100% and the vertical edges to 80% to 90%

[spawn]

Thank you so much @TheOnlyAaron.

I’m still trying it like you said that’s why I didn’t answer inmediatly, it’s the first time I use that option with SubD.
I’ll answer again when I get it.

But I still have a doubt about what happens afterwards, how could I make edges look rounder? like the example picture.

[spawn]

I’m terrible at this program
Even if I get the same result like you did, I still don’t know how to make edges look rounder.

2017 07 20 18 15 39

[Anssi]

I used the FollowMe tool.

[spawn]

Thank you so much @Anssi.

Not sure if the four faces are curved doing that way.
I’d like to learn more about SubD, I will keep trying.
Anyway, It’s still not rounded to look like the picture I took as reference.

[TheOnlyAaron]

Edges are rounded based on two things, the crease (set by selecting an edge and increasing the crease amount) and the “arc” created between edges.

See the example below for a visual example of what I mean by “arc between edges”

[Anssi]

Another effort with FollowMe and after erasing the created outer faces:

Rounding the corners might work best with Fredo’s RoundCorner.

[spawn]

Tbank you both so much, guys.

I still need to figure out how to make the first steps.
I’ll keep working on it. I will check the first Aaron reply as solution.