Subsurf shape problem


I am following a guide Your First Animation.
In SubSurfaces (Subsurf) step, it shows the result that ends of arms and legs look a little round:

But when I used Subsurf Modifier, the ends looks straight:

How to adjust it looks round?

Open the Tool shelf on the left(hit T to bring it up), then hit Smooth

I think he’s referring to the flat ends to the arms and legs. You probably have an aborted extrusion there, where you started to extrude again then escaped, leaving an extruded face loop with zero thickness, which causes the subsurf modifier to flatten out there. If that’s the case, you can get rid of this by removing the duplicated vertices that were created by that extrusion. In Edit mode, select all, then W>Remove Doubles.

thanks, it works