Thank you!! I've been making this costume piece by piece over the last year. I hope I can finally wear it full, next week. With the hair of this one, the clothes (a bit modified) from this one and the one with the make up test, and well! I'll try to do my best with the make up! I hope it all blends well together, I think this is one of the few cosplays I've been working on that hard. I think it's a very difficult one, because it's very difficult to make it look like in the comic, without wearing only a bath suit, so changing the clothes can spoil it, unless you find ones that really fit the character. That's why I've been working that much on this one. Also, I think Poison Ivy has so much personality, it's not like wearing a wig and voilą! you got it. This is one of the few characters I think are most difficult to cosplay good. I hope I can do my best!
I always recommend doing something difficult as apposed to easy. If you fail you learn, if you succeed you know to try something harder the next time. I think this was a good choose for you. I hope it turns out great. I recommend going a make up test on your knee area until you get the color you want. That will give you an idea on the amount of make up you will need, how long it may take to apply, and how you will need to layer and blend the make up to get a good look.