@the_lynx2
a good build order for small maps is generally: landfactory, 2p-gens, 2mex's, 3p-gens, landfactory. this would be for 5x5 maps. now for 10x10 or larger the general build order is as follows: landfactory, 2P-gens, 2Mex's, 6P-gens, airfactory. now there are certainly variations to these general build orders but these are the basics, and generally what you might want to stick to for now. also.......
SCOUT
Cant say that enough. you knew little of what he was doing the entire game. Also I noticed that at one point when you did scout his main base you flew 2 scouts at once. don't do that fly them separate way's so that way you get better intel. you could have walked your ACU straight down and taken the bottom right of the map. he had nothing to stop you from doing so, but because you didn't scout you didn't know this.
You also mention escorting your drops but that isn't always necessary(it's a good precaution though). It depends on where you are dropping. if there is no air defense. then it doesn't matter, or if he has no radar to see you coming then it doesn't matter either. But once again to know these thing you must.....
SCOUT