I think I found a way to make raised bead embroidery easier and more consistent using pieces of craft foam. The foam can be cut using paper punches or scissors, then layered to add as much height to your bead embroidery as you wish.
by Keya's Craze
by Leisha's Galaxy
by Beadaholique
by Hand Embroidery School
by Rose World
by Shagufta Fyms