normal summon petit moth, then equip cocoon of evolution, then the next turn switch to defensive mode, make sure you have perfectly ultimate moth in your hand and after 6 turns you can special summon him
As the previous comment said normal summon petit moth with cocoon of evolution in your hand, then equip it to petit moth. However, make sure to have desert sunlight or windstorm ready so the petit moth can live long enough to switch to defense mode.