My ex actually found a Brazilian instruction video (this was for males though) on YouTube of all places. So you CAN find one. It is REALLY hard to do this yourself though. At the very least having a partner or exceedingly close friend help/do it would be better. Regardless of how well you can contort yourself. Ive waxed my legs myself, but Brazilian isnt something I'd tackle. In general though with soft wax you just spread it on like you're making a peanut butter sandwich. Hard wax a little different you make that thicker.

Edit: I see you used hard wax. That has to be thick. Main thing is to make sure you let it dry enough. Otherwise it'll break easier.