From one rookie to another, yes you probably can. I'd practice brazing on some scrap so you know what to expect. My first brazing project after a little practicing was a repairing a cracked seatstay at the seat cluster joint. It's holding up well a year later. I had done some gas welding, so I felt comfortable wielding a torch, but if you've been arc welding a bit, then you understand a lot about heating metal.
The trickiest part is probably not the brazing itself, but the getting the alignment right.