Since "SNES Station" usually refers to the popular Super Nintendo emulator for the PlayStation 2, there are two common ways you might want to "make a text" for it: customizing the interface (UI) or hacking text inside the games (ROMs) you play on it.
Use PVSnesLib on GitHub , which allows you to use the C language. To show text, you simply use the command consoleDrawText(column, row, "Your Text Here"); .
In newer MODs like the one by pinguinoctis on PSX-Place , you can replace the default background by placing a 640x480 image named BG.JPG or BG.PNG in the same directory as the emulator's .ELF file.
If "make a text" means you want to change the dialogue or names inside a game (like changing "Mario" to something else), you need to perform ROM hacking before loading the game into SNES Station.
Are you trying to or edit the dialogue in a specific game? How to Edit Text in Nintendo Games - NES Hacking: Part 4