Here are some tricks that work for me:

+ Laser the audience so that they are the best fit for the offer. Using interests, age, location, etc. or you will just flush money down the toilet.

+ Make sure ad images & copy match the landing page style so it feels seamless as visitors click thru

+ Optimize landing page constantly to improve conversions

+ Attention is what you want. Always use creative, attention grabbing images/video

There is tons of other tricks too depending on which niches you are targeting. I'd love to coach you to success. I'm always one call away if you need me.