Make sure you knead the dough very well, it may take some work to get the dough to come together.
The smaller the cookie cutter the better as the dough is very crumbly. To make it easy on yourself it might be better to just cut it into squares with a pizza cutter (since your not trying to use your little heart cookie cutter because it'll look soooo cute in the pictures, you know, just as an example ...)
I didn't mind the white flour on the finished cookies but if you do dust your work surface with carob powder instead.