I redid 2 of the triangles as the heart were definitely not hearty enough.
The next step I will be doing is attaching the borders to the centre and then to see if the corners fit in nicely.
As yet I still have not decided what to use for the backing. I have a few bits that are big enough, but they may be too dark. There is going to be a IQC in September, so that may be a good thing to go and look for.
Have an amazing day.