How to kiss my bf

So my bf and I are in high school and haven’t been able to do anything saucy because we’ve been busy outside of school and I’m not really big on pda. In the mornings before the bell rings we usually go into the band room with some of my friends. I want to kick things up a notch and sneak into one of the side rooms with him and makeout. We haven’t made out yet but I know he wants me to be a little more dominant and not just go with whatever he does. There are chairs in there so I was thinking either sitting him down and straddling him while we makeout or kinda pushing him against the wall.