by the TA stalwarts here, but in my opinion, charts are useless as anyone can see the pattern that he/she wants to see in them. At best they are a record of the past, and history is not necessarily going to repeat itself. Also past performance is no guarantee for future. You may draw lines, triangle, arcs, circles, polygons, whatever just to come up with some pattern to support your bias.
These are nice tools, however, to convince others of what you think is right.
You got to develop an overall view based on fundamentals and then give or take a few hundred pips to allow for manipulation by the big shots to try to shake you loose.
TA however does help in the form of
previously known major support and resistance levels to take your chance on for deciding on your entry and exit levels. That is all.

This should, however, not be taken as if I am professing rigidity. Far from it, one must remain flexible to accomodate changing economic factors on both sides and their weightage. What may make or break you is the ability (or lack of it) to assign proper weight to any breaking news that comes along.