GameMaker - Asteroids - Part C

I've now finished the Asteroid and the google drive link is here.

Like before, the tutorials were a little fast paced for me but I managed to keep up by asking for help or re-watching the videos. I also, again, found that I made several typing errors especially when I though I knew what I was doing and did not follow the tutorials.This time however, I had problems with trying out some new ideas that were not used in the videos and which I came up with myself. I wanted to assign different image indexes of the same sprite to different on objects. This was a little confusing for a while, but with a little help and eventually realizing that I couldn't use a shortcut got me to get what I wanted. Other than that I made some artistic changes in the way the background, spaceship and asteroids looked. I also tried to change the mechanics of the game, in this case, by making the bullets that shoot out of the ship what propel the ship.