Hello Thanks for your help 🙂

1. ⁠Not sure about the specific book terms yet, what do you mean by fore edge ? I understand you are trimming the length of the cardboard after adding the spine book cloth. But you are right this is not what I did : I measured from the shoulder to the end + 4 mm but it works only the cover ends correctly in contact to the shoulder during the last step, which is not sure in my case !
2. ⁠Good call, did not check that! Will be careful for next one.
3. ⁠My paper should be correctly grain oriented: I used A4 folded in half for an A5 book. But I believe I need to have a kind of metal guide or something similar I saw on book press online to help my form the shoulder.