...suspect my efforts are still pretty risible. What it hammered home was the need to have the LH pattern secure under my fingers. I thought practicing the same simple patterns over and over would be boring, but oddly it isn't.With Alfred I developed the tendency to think "that will do" and moved on.
Glad you are having a blast, that's what its about IMO. I'm fizzling but have no intention of "fizzling out".
At least you're getting a laugh out of it

- sorry, couldn't resist.
I, too, was surprised to find that playing simple patterns over and over isn't boring (depending on the mood I'm in, of course). Perhaps it's a sign of piano practice maturity on our parts - we get engrossed in the process of making music, knowing that what we're doing will give us rewards in a longer run.
I have also found that if I have a chance to play by ear with another musician/musicians it helps enormously in learning to do some improv. It forces me to actually listen to what the musicians are doing and "grok" it into my part, and it forces me to not "worry" about the "mistakes" but to listen to them and use them to learn from/experiment with. It's all about the sound and not the sheet music. There's not as much opportunity to do that as I might like, and sometimes I don't take advantage of the opportunities I have, preferring to stick with lead sheets or just stay at home and practice something I'm memorizing. And sometimes I'm trying to avoid embarrassment

But in truth, unless we're preparing for a dance or something, as long as I don't completely dominate what the others are doing, the musicians I know are experimental-tolerant, and often encouraging. Don't know if that's an option for you, but it's something to think about.
In my experience even a little improvisational risk-taking brings huge rewards. Nice to know there are others on the road.
Cathy