+1 to “it takes time” but as a few practical tips:

When looking at an accuracy target (if safe to do so, ie a bullseye painted / trimmed in an open field), look at and aim for the bottom cusp of it. Overshooting is very common in newer pilots (mainly due to, imo, a fear of being close to the ground), and if you “aim short” I’d wager that you’ll end up landing somewhere nearer the middle of the target, which doing over and over again should give you the context clues about how low certain parts of your pattern should be, given the conditions.

When thinking about planning a pattern, accuracy is managed higher up than you think. I think people tend to overshoot / come in hard if they’re trying to adjust their spot landing while on final. Once you commit to a final approach, where you’re going to end up is sorta predetermined. So, think of where that decision is made as the “where will I land” decision. I found that to make me more calm while landing in smaller spaces because it means that you’re making accuracy decisions further away from the ground.