24 hr yellowing leaf & pits on Phal....Newbie needs advice

[Amydillo]

It is a pretty big Phal, so I'll have to see how big the roots actually are and then order an appropriate size pot and get it shipped fast....within the week. I love the look of a mounted orchid or one in a wooden bread bowl. I actually have a long wooden bowl but wouldn't know how to anchor it. One step at a time is probably wise for me though....slow down sister.