When I start the brass work on my models I am going to go straight for Solder paste as it seems that while more expensive than normal solders, it benefits from being appliable in measurable amounts and that will save wasted solder. Also, it seems to need less heat saving gas/electricity. It also can be used to hold small bits in place as Joe says saving the cack handedness of shaking hands or an inadvertant fidget just as you start to solder.
Those railings look good all the same, you have the knack of solder!