"Could you please let me know how long the download feature has been available? I think that the app requires an image to be in app to function properly. As you can see on my channels, I've had a big issue with seeing the projected image in darker areas until I got a pantograph. My solution for the app was to create shapes and make them blink using GIMP gif format. With layers, it shouldn't be no problem. You paint on one layer and then merge it down. For example, you have a base layer and layer one, which is pure black or white. Then, on layer two, you do your painting. Next, you move the pure white layer to the bottom out of the way, move the base layer up, and merge the painted layer onto the base layer. After that, you move the base layer to the bottom out of the way, erase your painted layer, and repeat the process. Do you understand?"