Nice work.
I have built a set of bunk beds ( now single beds ) a single bed and an outdoor bench . Fun , and cheap to build!
I am by no means an expert but you want to make sure your wood is dry (especially the tenon) or thing will start to fall apart. The wood with the mortise ( hole) can be a bit 'green ' as it will shrink and tighten on the tenon.
I usually cheat and hide some wood screws
The bunk beds where the most fun .The vertical members were from an old dead apple tree from our property , lots of character . headboard made of cedar and maple ,It turned out well .Wish I could find the pictures
TB