Not bad for begginer, but here use some tips:
To make better mission, when you start Y>Mission menu>New mission
Then you type mission name, and your username.
To make Bigger letters like A,B,C simply hold Shift+ letter
Also, if you wanna : hold shift+6.
To make collors you simply do like +r+in front of something,
+r+=red
+p+=purple
+w+=White
+b+=blue
+g+=Green
For characther conversation use something like
+r+Kevin+w+:Sup?
And so on!

thanks for the tips seygull i will use these tips in my next mission thanks