Get ideas by listening carefully to "Dem Bow" from the 1991 Shabba Ranks album "Just Reality." The beats on "Dem Bow" are the basis for the reggaeton rhythm. Listen to it, play along with it and then use your sequencer of choice to try to copy it exactly. See how close you can get to the original. Then add some variations of your own.
Fill out your arrangement with instruments that have sharp attacks like harpsichord or a square-wave synthesizer sound with a short decay. Use instruments like strings, timpani and nylon-string guitars. Supplement the western drum kit with plenty of Afro-Latin percussion. Listen to hit reggaeton tracks for inspiration.
Begin with an instrumental introduction, then alternate between two eight-bar long patterns for most of the song. Create original percussion fills and place them between sections as transitions. Add an instrumental middle section to showcase your beat making and arrangement skills.
Layer multiple samples to fatten up your snare sounds. Double individual samples and offset the tracks slightly or use an ensemble, chorus or double effect. Pitch one track slightly up or down from the other and pan them hard to opposite sides of the stereo field. Make the snares loud and vary them across the two main patterns of the song.
Use explosion and gunshot sound effects or sequence drum sounds to mimic them. For a less cheesy semi-automatic gunshot sound, program a synthetic snare to play repeatedly for a series of 64th or 32nd notes and panning and reverb.
Every once in a while, mute all instruments except for the bass drum on the first beat of a measure. Bring everything back when the snare enters. If you want to have longer drops that play through a whole measure or even through an entire pattern, pitch the snare sounds way up or replace them with something more subtle.