Durn, Skeet ! That brings back memories!
I learned to shoot a shotgun the same way- with a BB gun. Used wine corks and empty thread spools as targets.
Don't do much shotgun shooting these days, but when I do, I have to remind my self not to think....get to thinking about lead and follow thru and all that stuff, and I'm not gonna hit anything.
If I disengage my brain, things start falling when I shoot (well, more often, anyway)