GerardBegon@niquegeek Thanks a lot for your help. In fact my problem was due to not efficient connection by interne explorer. I corrected it and placed my order.
Now I am waiting for shipment and delivery.
GerardBegon@niquegeek, Yes its very odd!!! I remade in 2000x2000 pixels and upload again but unfortunately without any positive results!!
I attach the file.
GerardBegon At this step:
Click on "Choose File" above to upload your black and white image, then adjust it accordingly.
It seems that loading does not run! How do I get to adjust?
Thanks for your help.