Trying for another art show

Here's my latest large illumination, not finished. There's an Art Show I'm going to enter it in if I can get it finished this weekend. It's time to start another one after being at CZT last weekend. I have more tangles to do than time.

I'm going to do a "P" for my neighbor. I found a book "Paint Your Own Illuminated Letters" to sort of use but won't be using gouche like the book. The last one I used colored pencil and like that one the lodka. I don't think water color would work and I'm leary of acrylic. Any suggestions?