How to build upscale wainscoting

Using mostly scraps from the pony/half wall project to create complementary wainscoting for the foyer. Tools: Kreg pocket hole jig: https://www.lowes.com/pd/Kreg-Kphj310-Pocket-Hole-Jig-310-Adjustable/1001107148 Kreg pocket hole screws: https://www.lowes.com/pd/Kreg-Pocket-Hole-8-x-1-1-4-in-Silver-Zinc-Plated-Round-Washer-Interior-Pocket-Hole-Screws-100/3020293 Makita hammer drill and impact driver set: https://www.homedepot.com/p/Makita-18V-LXT-5-0Ah-Lithium-ion-Brushless-Cordless-Combo-Kit-2-Piece-Hammer-Drill-Impact-Driver-XT268T/300383694 Makita palm sander: https://www.homedepot.com/p/Makita-3-Amp-5-in-Corded-Palm-Grip-Random-Orbital-Sander-with-Dust-Bag-Hard-Case-BO5030K/202265679 Metabo (Hitachi) 15 gauge finish nailer: https://www.lowes.com/pd/Metabo-HPT-was-Hitachi-Power-Tools-2-5-in-15-Gauge-30-Degree-Finish-Pneumatic-Nailer/1000898600 Metabo (Hitachi) 18 gauge brad nailer: https://www.lowes.com/pd/Metabo-HPT-was-Hitachi-Power-Tools-2-in-18-Gauge-Brad-Pneumatic-Nailer/1000786134