Currently, I only have two characters who look similar to one another, Delilah and her mother, Julia:
Apart from minor design difference (Julia is taller and more muscular than Delilah is), one might not easily spot the difference. However, I am willing to overlook it considering that at this point in the series Julia is dead. So I dont need to worry about the two of them being on screen at the same time. But if the time ever comes, I will tweak Delilah's design to better distinguish the two