I am almost finished with Corozal West and Los Rios. I have done a lot of Balboa and Balboa Heights. Al of these using tracks and my own governments maps in AutoCAD.

I selected 1600 m x 1200 m areas in my UTM map. I converted them to png plotting them; and then, I opened the files in JOSM using picklayer plugin. I used the tracks that I made with my personal Garmin Legend Etrex.

I downloaded the tracks from my GPS with Gebabbel. These files were uploaded to OSM. So, with my tracks and others' track I "georeferenced" my png drawings.

Then, with everything set up, I draw streets and buildings.

Second stage
My good friends in Surveys Branch provided me with ESRI shape files made by our government agency. I converted these files to gpx using

http://mygeodata.eu/apps/converter/main_EN.html?dataType=vector

I open the gpx files in JOSM, converted them to OSM files, clean the area and upload them to OSM.

This way I have already finished with Pedro Miguel and surrounding areas.

I have plans to finished all roads around my work areas, continue with the most significant buildings and finished with the coast lines.