1.Next time I would suggest teasing roots out and removing some compacted core soil. Leaving the compacted centre is not advisable even if very temporary. Much more difficult to water effectively and high risk of anaerobic centre mass killing the roots. The trees you did not prune as much will have a better chance of survival if repotted in the spring. More foliage to fuel root recovery. With conifers leave as much healthy foliage as possible when repotting.
2.Fall pruning typically refers to minor work to improve health and ramification. More extensive styling or heavier pruning is best late winter early spring when recovery is aided by a longer growing season, as opposed to dormancy.
3.As a general practice avoid major styling and major repots within the same calendar year and if possible conduct those activities within time frames that are best suited to styling or repotting.
4.Your styling attempt from an aesthetic point of view is reasonable for a beginner. The results will improve if you keep in mind horticultural needs of the plant and keep a stronger tree throughout the development process.
Just some thoughts to consider. Enjoy the journey, Bonsai is a lifetime learning process.
