I think the best follow through is to do nothing

let the bow and release hand react to the shot without interference.

My spot and hunting follow throughs are different. When I shoot spots and strive for 100% bt release my bow arm kicks to the left and my release arm will go behing my head. Thats the way they react and I don' t stop them.

When I practice for hunting I modify the release to a 75% bt release. I gain a bit more control over when it will go off and my bow arm will continue to stay in line with the target or jump a bit left.

I also practice 100% control releases for quick shots and again my bow arm will stay inline with the target.

I think the main points of follow through is to not drop the bow arm, flinch, peek, etc. Just let the shot and the after effects happen on their own