Excellent. As for box jumps…

You can try frog squats to build up; squat down touch the ground with the palms of your hands if possible, jump forward a small step, land, squat and immediately jump forward again. Walk back. Two hops and walk back, reset.

More advanced you step up to a low box and jump down to a two footed landing. Once you have practised that you jump down with a two footed landing and then immediately jump forward and two footed landing. Jump down, jump forward, reset.

The trick is as soon as you land you jump or squat forward again. You want to use the down spring compression to aid the jump forward/up. These are plyometric drills and help develop power and body awareness which are necessary prerequisites for a safe box jump.