Mike, first I want to say I’m not telling you how to cut.
Whatever works for you is my motto.
But looking at the picture of you ripping the pc of plywood, I might suggest that you stand a little to the side and apply angled pressure as your pushing through the fence. This will give you better control making a straighter cut. Standing straight behind the wood makes it easier to wiggle side to side making a wobbly cut. Not trying to knock you, just offering a suggestion. Like I said, whatever works for you, but I find this better for myself.

Figuring out how to do something you have never done is what makes a good challenge.