You did good. One strict rule is that when you water your phal you water thoroughly to rinse away fertilizer salts. The sphagnum your phal is in will only need watering every 7-10 days. Poke your finger into the moss at least and inch or two deep to check how moist the center is. Water when the pot begins to feel light to you. Pick it up to get used to the weight now when it is good and wet. I use wooden skewers you can buy at any grocery store. When a stick, inserted for 10 minutes is placed against your cheek, if it feels wet, wait; damp, water soon; dry, water now. You should buy some orchid food, make sure it doesn't contain Urea (that can burn phals roots). You can use a even 10-10-10 formulation or 20-20-20, when they are potted in bark a fertilizer with a higher nitrogen # (nitrogen is the first number in the formulation). Use at 1/4 strength when you water. Every 4th watering leave out the fertilizer and rinse very thoroughly.
Good Luck and welcome to the world of Orchids. Let us know when you get more...lol