We do a single stick Heaven 7 which is a basic flow pattern.
Starting with stick in your right hand strike up and across to left, turn stick over and backhand up to right in a sort of figure 8 with the 8 lying on its side [like the infinity symbol]. Count 5 of these strikes then one low backhand [target the knees] and one high backhand [target the head].
You can do this alone or with a partner, remember to turn the wrist over nicely so that your knuckles form the basic path a blade would take if you were using a sword for the strikes.
Earth 7 is the same basic format except the strikes go downward to the earth and it finishes with the 2 backhand strikes one low and the last one high.
Single Sinawali is a 2 sick weaving pattern, sticks on each shoulder. R stick strikes high [to the head] as a forehand strike then strikes low as a backhand strike [to the knees], repeat with L stick high then low. It can be done with and without partner. Remember to chamber the stick across the body to shield your head on the opposite side after doing the forehand high strike.
Important point is to ensure the sticks are chambered on the shoulders for protection as you switch sides.
Double Sinawali is done with R stick chambered on shoulder, L arm held across body with L stick chambered under R armpit.
R stick strikes high [to head] then chambers across body to protect the L side of your head , L stick strikes low then R stick backhand high strikes the other side of their head.
L stick is then chambered on L shoulder with R stick chambered underneath L armpit and the whole sequence repeated with the L stick. You then keep alternating the sequences.
Redondo/redonda [windmilling] is a variation of the double Sinawali stickwork. Sticks are chambered as for double Sinawali and your practice partner holds his sticks out horizontally either side of his body in a wide Vee shape.
R stick strikes the opposite partners R stick then umbrella blocks around the head as the L stick hits the same side of the partners R stick. As the L stick strikes down the R one comes around the back of your head and strikes again. Chamber as for Double Sinawali and repeat on the left side.
Important points to remember is to make sure the first stick striking does a correct umbrella block around the head as the 2nd stick strikes down to prepare for the 3rd strike.
These can be done as part of a strike or defense and are a speedy & powerful flick of the stick usually to the head while moving back.
these are done usually as part of a disarm or strike to the hand and head. General form of these will possibly be a block or strike of some sort followed by a rapid series of blows to the hand - generally something like outside strike - inside strike and then a watik to the head. ie strike outside the stick to the hand then arc the stick rapidly to the other side of the hand and strike it again then watik the head. The alternative is inside - outside and watik to the head. Either way its very nasty and would stun an ox.
We have other drills such as Banda Banda with double strikes and some lovely vicious throws using crossada either with stick or openhanded.