If I wanted a Christmas Tree for a pot outside around 3 foolish tall this year that my daughter can decorate each year, what should I look for? Only ever had indoor fake.
Have a look at the RHS advice, MayLane:
at the bottom is a list of different types of tree which are commonly used as Christmas trees. Search for each cultivar as "pot grown" and you should find lots to choose from.
You don't have to go for the customary varieties as there are other trees that look beautiful with baubles and without. One year we had a thuja smaragd which spent the first Christmas indoors then moved outside for a few years before getting a bit above itself. Unlike a lot of the traditional trees, the thuja is very conical, has dense foliage, and looks like a drawing of a Christmas tree.