Unsure how to hang awning on garage, nor what bolts to use
The middle photo will be best with a spacer underneath. Since the top screw is doing the lions share of supporting the awning then the spacer is really just keeping the bracket solid and not holding as much weight but use a screw that will get through the shingles and into the sheathing.

Pre drill pilot holes and insert an outdoor rated caulking into each hole to keep water out.

Use ledger bolts meant for deck ledger board in place of the anchors. 

Make sure the white trim board is fastened into structure/studs.