(This post was last modified: 06-13-2018, 03:55 PM by Pete123.)
Normally, you strop after every shave. You are doing your cheeks, which is very smart, so you will get more shaves. The way to know is when you start feeling tugging when shaving. You can strop on something different while waiting for your order. A hard back book with fabric covering that is flat would work just fine. You could also use a piece of cardboard laid flat on a table or a piece of fabric stretched around something flat. These aren't perfect, but will do while you wait.
A couple of things to know in learning to strop:
Use a light touch. The edge of a straight razor is very, very thin. I'm not Mr. Science, though they may be only a few molecules thick. This means that the edge is very, very fragile. You understand using a light touch as you have shaved with a straight with very good results. Those pesky whiskers turn the edge of the razor when you shave. Stropping is only to straight the turned edges. All that to say, use a light touch. Pressing too hard is the biggest way that new shavers mess up the edge.
The way you turn the razor over at the end of a pass in order to go in the other direction is critical. You want to turn it over on the spine, which is the opposite side from the cutting edge. You want to already be moving in the opposite direction before bringing the cutting edge back to the strop.
Finally, go slowly and keep your technique correct. Don't worry about speed, it will take care of itself.
I'm a huge fan of videos done by Lynn Abrams. Search Lynn Abrams stropping and it will come up with his videos.
Like
celestino , I like palm stropping and do it between every pass.