To create an authentic Catrina costume, begin by selecting a dress with a long silhouette, preferably in bold colors like red, yellow, or purple. Next, invest in theatrical makeup or face paint to recreate the iconic skeletal features, paying close attention to fine lines, jawline definition, and intricate floral motifs. The makeup application allows for personal creativity and flair, adding uniqueness to each costume. Finish the look by accessorizing with delicate jewelry, a flower crown or hat, and perhaps even a lace parasol to complete the ensemble.