Day 4 is L handstand against the wall. Sometimes this can feel even harder than kicking up to a wall.
Start out on your hands and knees with your feet against a wall. Push up to a shortened downdog, heels on the wall. Stay here or walk your feet up the wall and straighten your legs. Your hips will stack over your shoulders and wrists. Keep your core strong. It is normal to feel like your hips are beyond your hands when they aren't.