This is the first time I use the photosensitive positive method to make a PCB board and the results are very satisfactory for me, you just need to follow the instructions which I did post before.
Check this photos out.

Board after exposure and developing using the positive method:

EXPOSURE and DEVELOPING

Getting the etchant ready:

Ferric Chloride etchant

Ferric Chloride etchant

Etchant in container

Board after the etching process :

PCB board ready for drilling