(BLENDER) Bevel+Subdiv Topolgy HELP

Asagrid

I'm working on a Blender model using Bevel+Subdiv pipeline and I stuck on a problematic element. I want to make a "ridge" that smoothly flows into basic shape but has sharp edges along. However I can't find a topologic solution to perform that without artifacts (which is critical on Bevel+Subdiv pipeline). I really need your advise on this one! 

iam717

Hopefully someone comes around atm not at my own pc but when doing my "quads" i try not to put in anything else and do tests, much like frank polygon does them (worth looking into their sketchbook in that section) for a possible solution while waiting.  It does get pretty difficult when you get a bunch of lines/rows of detail in so try not to add things that will cause those issues.

Also you seem to me anyway by the img ref given you need to add a line exactly where you marked, it looks like a triangle from what i can see add a new line down that path @ the blue line.