Great constructive critique` from Fuzzy. Don't give up or be disheartened we have all been there (more than once) it was a complicated project to take on, but it has given you some great learning opportunities, especially with selection on timber for a particular project, I have had a similar experience recently trying to embed timber into resin, the timber I used (because I had it already) was very unsuitable resulting in an expensive bin full of bits, we all learn as we go and never stop.
Great effort have another go and show us the results.
S.