Greetings taurusgirly -- unfortunately there's no tip / technique / pattern / prayer / blood sacrifice to some ancient deity ( goodness, did I add that )
ClixGrid is a game based on chance -- no matter where you'll place or make your click, there's no telling if there's something or nothing there, let luck win your favor -- so just click where you can; click regularly and click where your gut feelings are -- who knows, you might nail it when you least expect it
And no -- ClixGrid does not show favors if the user is a Standard or Premium user -- even with the difference in the number of ClixGrid chances, there's always someone who'll win