Old, cracked patio, can I use a flagstone mold over it?

My patio is about 28 years old and badly worn and cracked. It is 35 by 10 feet and surrounded by the house (brick) on one side
and a brick wall on the remaining 3 sides. I was wondering if it would be possible to use a concrete mold that creates a flagstone effect. The mold holds one bag of quikcrete. Just fill it in and remove the mold and move the mold and do it again. Later, I'm guessing you fill in the cracks with dry quikcrete and hose it down. I found the mold and don't have any instructions so I'm guessing a lot. Biggest question is can I put the mold directly over the old concrete and will the new concrete stick to the old? I was hoping I could work small sections at a time and work till I get tired. With all 4 sides of the patio having a wall it is going to be impossible to work a big area from the outside like you would if you were pouring and finishing a new slab. Any suggestions or ideas would really be appreciated.

 

Those molds are to make concrete pavers. The "stones", when finished, just lay beside one another with no mortar or anything to hold them together. You could do it to hide the cracks, I suppose. It would be like buying pre-made pavers and just laying them on the surface of your concrete, except a lot more work. Depending on the amount of prep work you did, they may stick to the old concrete. Unfortunately, if they do stick, any stones that bridge a crack in the patio will probably crack as well when the ground shifts.