OA, it does not matter. Any TF will do to create the statistics. It is the statistics that give you an edge to start with... not any lines. However I think lines at certain levels can improve your overall results. I do not use them.
LN
I can draw a line now, anywhere, anytime. Anything can happen anytime, but often things happen more at certain times. However I do not prefer to trade forex. Your line at 1.1981 made money if you were long with SL 0.002 and TP of .009.
LN
Here we go again. Whatever you trade :
1) draw a line
2) determine SL
3) determine PT
Both PT and SL must be realistic, depending on range
Range is depending on Timeframe
PT should be bigger than SL
Preferably PT occurs more often than SL
LN