Select next plank of wood and set on top of the previously screwed in plank. Place a piece of scrap wood on top and tap the desired plank into place. Using the scrap wood (rather than hammering the wood directly) will prevent you from denting your wall.
these wood slats are utilitarian in the way they are connected to the substrate — countersunk screws — but note the care in angling the top of the projecting pieces, so water sheds off the wood. contemporary exterior by Fougeron Architecture FAIA