I think TwoFiveFour has hit the nail on the head in the last 2 paragraphs.
Its a good concept, I hear exactly what you're going for but its not "popping". The thing that makes Trap EDM bang is that pumping 808 kick and snare.
YouTube is your friend lol. So many tutorials on there.
Also try layering the horns, 3 separate tracks one low mid (300-800hz), one mid (800-2500Khz), and one high mid(2500-6000Khz) all playing the same melody, this will reinforce the melody and fill up the frequency spectrum.
This is a really useful chart regarding instruments and frequencies -
http://i.imgur.com/aCwvAgv.jpgHope that helps.
Peace