Reverse Cascade Throws
Tricks involving 'over the top' throws, like Juggler's Tennis, the Half Shower and the Reverse Cascade , are considered to be among the simplest tricks that can be done with 3 balls, and they are often recommended as good first tricks to learn, once the cascade has been mastered. With clubs, however, most people find these tricks a lot harder, probably because of the strange angles at which the clubs are thrown, and I wouldn't suggest that a novice juggler try to learn them - there are easier and better looking tricks that you can do instead.
One hint that can make reverse cascade throws easier, at least when you do them in ones and twos, is to make the cascade over which you are throwing, as narrow as possible. This can be achieved by keeping the clubs pointing straight forward, rather than angling them into the throws as usual. The hand making the reverse cascade throw should be moved outwards slightly, away from the centre of the pattern, thereby allowing the club to be angled inwards, making it more like a normal throw. Taking the right hand half shower as an example:
Shaded box denotes area required by the club during its throw
Throwing the club pointed inwards in this way makes it easy to catch, because it arrives in the receiving hand angled like a normal cascade throw would be; however because the body points inwards the club must be thrown from a point further out to the side than normal, in order to avoid a collision with the other clubs in the pattern.
Half-Shower
The most common problem people have with juggling a half shower is that they turn in a circle as they juggle. This can be hard to overcome unless you understand what it is that is causing you to turn. Although it may feel as if the clubs are somehow forcing you round, what is actually making you turn is your Juggler's Instinct (take my word for it, you do have one) - your brain's way of stopping you causing a collision. If your left hand throws have started to turn inwards as shown below, then your right hand throws will have to be adjusted to avoid colliding with them. You will sub-conciously start moving the right hand outwards and backwards before throwing, causing you to turn in a circle. The cure for your rotating half-shower pattern therefore, is to make sure your left-hand throws always point straight forward rather than inwards.
Shaded box denotes area required by the club during its throw
The reason that I have explained this problem and its solution in such detail, is that it crops up quite a lot in club juggling in many different tricks e.g. shower and two in one hand, yet the reason for it is almost always the same.
Turning in a circle with a half shower is quite a nice trick in its own right, and probably looks better to an audience than if you stood still - by all means do it this way if you want, but make sure that you are able to stay still when you need to.
Reverse cascade throws look good when thrown as outside flats - try a half shower with outside flats going over the top, and inside flats underneath.