Well done Marcin Maćkowiak
Maybe you used it for didactic purpose, but if not, I would suggest you to try the Sweep Region [RMB] instead of Extrude->Normal for the arm modelling. Very handy for that kind of extrusion.
Its easy to extract along the selected face normal (let say Z axis) and as you enter a perpendicular axis (in this case X) you can easily extrude, scale and rotate all at once. The use of repeat command [D] allow you to model it continuously and even for the fingers you still uses the repeat command.
As the Tweak commands aren't "repeatable" you can still make changes in the topology and selecting a face restart to repeat the Sweep command without problems.
Happy Christmas and a wonderful New Year to everyone.
I wish it could be a less quiet year for this Wings3D's community.
* Featured in our Wings3D fanpage at G+ and Facebook.
Maybe you used it for didactic purpose, but if not, I would suggest you to try the Sweep Region [RMB] instead of Extrude->Normal for the arm modelling. Very handy for that kind of extrusion.
Its easy to extract along the selected face normal (let say Z axis) and as you enter a perpendicular axis (in this case X) you can easily extrude, scale and rotate all at once. The use of repeat command [D] allow you to model it continuously and even for the fingers you still uses the repeat command.
As the Tweak commands aren't "repeatable" you can still make changes in the topology and selecting a face restart to repeat the Sweep command without problems.
Happy Christmas and a wonderful New Year to everyone.
I wish it could be a less quiet year for this Wings3D's community.

* Featured in our Wings3D fanpage at G+ and Facebook.