Step 4: Print the board
After you have printed the design, take your pcb and get a piece of steel wool and clean it under water until the copper shines, dry the pcb using a towel and then tape the cut design facing the copper on your board, this will ensure that the design stays consistent and dont move while we are transferring it over the board.
Now get your iron, set it up to the maximum temperature (for me it was linen mode) and start ironing over the paper until it stick to the board (the longer the better), dont try to remove the paper or you will damage the transferred design and you will have to acetone remove the transferred bits and start over again.
Soak the board with the paper taped (remove the tape first carefully) in hot water and start pealing off the paper until you are left with the copper board and the design transferred on top.
compare the board with the pcb design and using the marker fix any broken traces by covering the copper area with the marker.