Ask for the same thing two ways and you get two different games.
None of this is hard. Five things are enough.

  1. 01

    Start with how it plays

    This one matters most. Say how you move and what counts as winning, before anything else. Not "a cool game" but "tap to jump, dodge ten pits and you win".

    The Studio composer: plus button, "Tell me anything" box and the Send button
  2. 02

    Ask for one thing at a time

    "Add enemies and sound and change the colors" tends to leave all three half-done. Ask for one, play it, then ask for the next.

    The composer with "add two more moving platforms" typed in
  3. 03

    Put the look and sound into words

    You don't have to draw anything. "Pixel art", "a city at night", "pastel colors", "a small effect on landing" — just write the mood down.

  4. 04

    Point at assets by number

    Insert from the asset library tags them in the box as 【1】. Write "make 【1】 the main character" and that exact image gets used.

    The composer with an asset chip numbered 1, referenced in the typed message
  5. 05

    Open long requests up

    The bottom right of the box goes full screen. When you have a lot to say it is easier to write, and easier to reread before you send.

    The full-screen "Enter message" editor with a large text area, Cancel and Send
2000 charactershow much you can write at once
1 per gothings to ask for at a time

If something goes wrong

When what comes back is not what you pictured, saying what's off beats resending the same message. Pick one thing: "the enemies are too fast", "the sound is too loud".

Liked the old one better? Version history in the ＋ menu opens an earlier version, and Restore brings it back.

Don't aim for perfect on the first go. Make something rough, play it, fix one thing at a time. It is the fastest way, and the most fun.