Question when i try to follow-me to make some ceiling profiles

when i try to use follow me sometime the result is kinda different, as in the first pic it looks smoother than the 2nd pic where it has alot of lines (i didnt use smoothen edge on first pic), and im looking to consistently able to create the result on 1st pic, any idea how? sry for bad english and im quite new to sketchup too

If the curved parts of the profile are welded before you extrude, it shouldn’t show all those lines. You can also fix them after as well by softening the edges.