How do you get a 25K star medal on bejeweled blitz?

To achieve a 25K star medal in Bejeweled Blitz, focus on creating high-scoring combos and cascades by matching as many gems as possible in a single move. Utilize power-ups strategically, such as the Flame Gem and Hypercube, to maximize your points. Additionally, try to keep the board clear of low-value gems to create more opportunities for larger matches. Lastly, practice your speed and efficiency to optimize your scoring within the limited time.