I would start by copying a known good circuit - down to the very parts they used, or at least something that's very close in specifications (in which case you will have to understand the circuit deeply enough to know which parameters to look at exactly, as not all matters as much).
Then it being a boost converter, solder it on a piece of perfboard to make sure you have good connections.
Analog circuits such as these are much harder to get right than digital circuits, as things such as component placement may make a big difference.