Just be YOU! If you pretend to be something that you are not, you have to keep that up if you get hired. If you don't get the job, move on to next one.

I have actually tried that in past 4 interviews and I thought I fucked everything up by being myself but everyone fucking loved me and all of them wanted to hire me ! :D
Even when I wasn't the most suitable one for the job, they said that they loved my honesty & personality and wanted to hire me :)