As the series progresses in "Haikyuu!!", Tsukishima's timing and blocking skills evolve through consistent practice, match experience, and learning from his teammates and opponents. Tsukishima becomes more observant of his opponents' movements and tendencies, allowing him to anticipate attacks and block more effectively. Additionally, he hones his technique and positioning to improve his success rate in blocking spikes. Over time, Tsukishima's confidence in his abilities grows, enabling him to make critical blocks in key moments during matches.