Song Structure related tips -
1. Learn to write in Sonata format.
It's a basic format for song writing (story telling?). Here's a very helpful guide. You will write much more beautiful music once you know this.
2. Work in chunks of 16 bars.
It's one thing to create the kick and bass loop with 1 bar looped but its another frustration when you get stuck in those 4 odd bars for hours. Move on fast, its not absolutely critical to perfect your small loop, its a very small part of your song (which isnt even written yet).
Stick in the loop for 64 bars I say! then seperate it at the 32nd bar. Give a 4 bar break.
You have your "post-intro" (intro to the percussion) section ready in minutes this way. Now work on the 1st 32 bars by adding percussion and pad loops. Maybe leave the 1st 4 bars with just the kick and bass. In this way build progression throughout the tracks. Mess it up and give the "screwed up" or "transcending" feeling with your sounds in each break of the song.