Telling adult ‘dc’ tomorrow- any pearls of wisdom?

[iknowimcoming]

Found some online tips about keeping things simple, trying to avoid blame, supporting them and trying not to turn it into them supporting us etc, however (narcissist) stbxh has said he will absolutely not say he is ok with it, will tell them it’s all down to me, and will not hide his emotions from them (presumably just in case I wasn’t sure I was doing the right thing - sigh) dc are 24 and 26. Advice welcome

I told my two that neither me nor their father was happy and we had decided to split. Reminded them that we both still loved them, that it was nobody's fault, but it was time for us to try being happier apart. I also made sure both DC know that they would always have a home with me if they chose (one still at home, other had moved in with partner). After years of seeing both their parents unhappy, grumpy and bickering like 3yr olds they agreed it was time too.

I only kept them informed of the house selling process and getting rid of clutter/childhood belongings after that, or any positive emotions such as I couldn't wait to choose new sofa/bedding/whatever i wasn't allowed before . The divorce and financials and any hurt was not spoken about by me.