Help get this topic noticed by sharing it on Twitter, Facebook, or email.
This topic is no longer open for comments or replies.
If I understand you correctly, you want to overlay an image over another and have the overlay be transparent and black and white. You can do this in Pixlr Editor like this:
1. Open first image.
2. Click Layer > Open Image as Layer. Choose the second image.
3. With the overlay layer selected, click Adjustment > Hue and Saturation. Drag the Saturation slider to -100.
4. In the Layer Editor, Click the Toggle Layer Settings Icon in the bottom left, and adjust the opacity of the layer.