I used a Skrull Elecktra base with a DC Armory Supergirl head. I had to re-do the neck peg in order for the head to fit. I trimmed Elektra's sash to make Ms. Marvel's scarf. I sculpted the mask, gloves and top of the boots and re-painted. The biggest struggle with this custom was paint rub on the joints. It was very frustrating. Let me know what you think.
