How do I align a view to the plane intersecting selected vertices new to Blender, working through this tutorial. I'm about to extrude out the trunk of my elephant, but one vertex from my extrusion face (see screenshot, the bottom right one in the selected loop) forms a sharp angle. I'd like to move this vertex to soften the angle, but want to ensure that it remains "straight" relative to the other selected vertices. ie: at present, if I just hit 'g' and move it around, the side view no longer shows those vertices as a straight line. I hope that makes sense!

How can I align the view to the plane intersecting those vertices, so that moving that vertex left and right with my mouse will keep it in the same plane? I have tried align view to active with those vertices selected, but this seems to align the view to the entire object, not just the selected vertices.



Edit: based on this question, Shift-Numpad 7 looks like what I want. However, when just selecting that loop, it gets me to this:



I assume it is basing the orientation off the single white vertex rather than the whole loop? My workaround for now is to select the loop, create a face, rotate with shift-numpad 7, delete the face, then do the edits I want to do. This works, but seems pretty kludgy. Is there a better way?
just rotate the whole loop with R from the side view then grab, move, and scale the whole loop into place.  for the trunk to have a smoother curve, you're going to have to add more edge loops with Cntrl R.

Edit: part of the reason is your topology, i just edited your image a little to give it a more practical topology. you just gotta move your vertices around a little near the mouth and neck area.  take a look at the edited reference image below