I contracted a qualified plumber/tile fitter to do the job to avoid problems.
I guess DIY would given me less headaches and the job would be finished by now.
I do not know how to move forward.
I have called few plumber/tiler fitters with different approaches and views. Some say... "nothing wrong love", others: "Gee... can't do it" and now and again: "Wowww... must start all over".
I do have the feeling that the "Wowww... must start all over" is the right answer.
Needless, to say that I wonder if DIY with YouTube videos would have been easier.
Trouble is that I don't even know the name of the parts needed for the job or have any tools.
Any views, suggestions, comments on the photos will be gratefully appreciated.
Thank you
JKLstar
UPDATE Photos in the topic and , also, just had another plumber to apply for the work. He told me:
"The pipes are fine, the dent in the copper pipe will not cause problem. Remove the radiator to fit the tiles. Cut the tiles with a round cutter or something like that....