Place the first wall panel on the wall with its tongue side flush with the wall edge.
Use an air nailer to fix the panel to the wall with nails seated at the tongue at an interval of 350 mm.
On the other side, attach clips to the panel at an interval of 350 mm, then fix them to the wall with an air nailer.
Snap the second panel into place, the tongue of the second panel should fit into the groove of the first. Finish the rest in the same manner.
Around the corner, cut the panel to a suitable width.
Fix it to the wall with an air nailer.