Veggie Garden for a beginner

Hi there, I have an old concrete fish pond that was built on the ground as opposed to soil. We were going to simply demolish it but it is huge and would make a great veggie garden. We have removed the lining and planning to layer it with the following:

1. Gravel to allow for water flow
2. Cardboards
3. Old soil and organic matter from my garden)
4. Bark chipping
5. Fresh soil

I wanted to get thoughts on the above and if this is in the right direction?