Gather your supplies together(it's always good to have more than you need). Try to keep the same color scheme and style.
Use the adhesive of your choice to glue the biggest items/embellishments on first. This makes the job way easier in the long run.
Glue the smaller item, such as the polished rocks, in the nooks and crannies between each big embellishment.
Add the rest of your embellishments on, leaving the edges for last. Remember to go crazy!!!