Zentangle Challenge #218 - White on black or found

wI haven't posted for a while, nor have I tangled very much. But just this past week I was preparing a Zentangle display board for a Holistic Health Fair and had done several different tiles using 4 tangles on each with different strings, just to demonstrate how different, yet similar they could be. I was happy with all the tiles I did, except the white on black. I don't have a lot of experience with these and frankly avoid them. This week's challenge motivated me to really step out of my comfort zone!! I still don't love white on black, and would dearly love to have some lessons on them, but once I got started, I didn't want to stop. So here are the 5 tiles I did today ...