I created my own map, but when I play it ingame, the AI is just standing by. What do I need to do to make the AI gather resources and attack me? Also, I have two additional questions:
1. How do I make the map title coloured with map preview included?
2. How can I show a planet before playing a custom map, like in the campaign? (Example: High orbit over Char etc.)

the answer to getting the AI started.

note: I haven't edited starcraft maps in over 5~ years, so this is all coming from very faint memory. So, I might not remember the names of the variables and scripts correctly, but you should be able to figure them out.


- draw a location box over the AI's starting command center/nexus/hatchery including the peons.

Let's say the AI is terran.

For the starting command center and scvs, Add a new trigger.
->player 3 (the terran AI)
-> always
-> run AI script at "location", Terran expansion campaign insane

and for AI's expansions, do
-> always
-> run AI script at "location", area town


do that for all the other AI command centers/nexuses/hatcheries

I don't know how to do #2.

Number 2 is impossible, its for campaigns only and its not like you are gonna draw a picture of the planet, it would probably look crappy unless your an artist.