It is always best to fill the container first and lay out the pieces so you can see how it all comes together. Fill the pot to the brim and tamp it down gently. You want to avoid that the soil sinking down and creating a 'sunken garden' after watering it in. When you are happy with the layout, the planting starts.
Always plant the larger plants first. Loosen or cut off the bottom of the Acorus to open up the potential root bound clump. Plant and firmly press the soil down around the base. Add the 'lawn plants' and the Acorus. If you have a larger plant you can easily divide it. They come apart easily and you can make quite some small plant divisions if you wish. This is one of our favorite plants for edging a pond or stream. Next, add the pebble mulch.
Add the larger items like the teepee and the camper next. Then add all the little accessories that make the scene come alive.
How to Take Care of Your Fairy Garden
Check your garden every day. If it is very hot it might need water every day or every other day. Fertilize it with a general liquid fertilizer every week. The 'lawn' might need to be kept in check during the season. You can cut it back and also cut out pieces so it does not take over the gravel area.