Added feedback

Signed-off-by: ahcorde <[email protected]>

tutorials/21_transform_fbx_to_dae.md

@@ -19,15 +19,18 @@ Then import your FBX model. `File -> Import -> Fbx (.fbx).`
 
 Now we can edit some of the properties of the object.
 
-## Change the origin of the model
+## Change the origin of the model (Optional)
+
+Sometimes a mesh may have an origin at an offset from the desired location. For example,
+you may want to move the origin of a robot arm to the base or move the origin of a wheel to its center.
 
 Select the object by pushing the letter `a` and enter to `Edit mode` by pushing `Tab`.
 Select the part of the object at which you’d like to place the origin point (vertex, edge or face).
 When we are ready push `Shift + s` to bring up the *snap menu* and select `Cursor to active` to locate
 the Blender cursor (red/white circle thing) in the selected new place.
 Switch back to `Object Mode` and see the Blender cursor where your future origin is going to be.
 In the `Options` menu select `Origins` and then select in the object menu `Object -> Set Origin -> Origin to 3D Cursor`.
-Now your origin it's the desired place. We can move this origin to another place by editing the
+Now your origin is at the desired place. We can move this origin to another place by editing the
 transform dialog.
 
 @image html img/transform_fbx_to_dae/edit_orgin.gif