Bobby
The arrowhead basketweave is a very good question, I struggled with this too. The angle of your stamp cannot be greater than 1/2 of the length of your stamp, scribe a centerline and at the strarting point place the center of the stamp exactly across the centerline tip the handle towards you at about 45 degrees and strike very lightly with your mallet, now place the top of your stamp on the centerline and the bottom of the stamp on the end of the horizontal mark you made. That should be the correct angle.
I hope this helps.
TDOG