Level your build plate: This is one of the most critical operations to get your print to stick to the build platform. Incorrect build plate levelling can also result in nozzle blockages if set too low potentially causing significant damage to your machine. Levelling should be performed every 5 to 10 prints until you can recognise if a print is failing due to your build plate not being level or the nozzle gap not set at the correct height. The height should be determined by the build resolution.
When printing with dual nozzles it is essential to have both nozzles set at the correct height to ensure the second nozzle does not dislodge your part when travelling over it.
Using Kapton tape : This kapton tape is very useful to have your print stuck up on the build plate.