Ikonnikovii A Miracle Worker:

Icon of St. Nicholas the Wonderworker embroidered with beads in a frame under glass.What can I pray to Saint Nicholas about and how can I ask for his help
The help of St. Nicholas to people is so extensive and numerous that we can safely say that he helps in any petitions that do not contradict the will of God and do not harm the soul of the petitioner. Prayer to St. Nicholas the Wonderworker will help in any need and situation, the main thing to remember is that the Saint cannot be "spoken" by numerous repetitions of prayers, requiring the indispensable fulfillment of his will here and now.

But you can turn to him as a living person with sincere faith in his help, humbly relying on the will of God. And remember that even if the Saint does not fulfill the request right now, your prayer will not remain unheard, but sooner or later it will bear fruit.