Is this a good idea?

So me and this guy go to the same church. I really like him but I don't if he likes me. i don't really know how he acts around women he likes and he's never had a girlfriend. I'm 18 and he's 19 and he's kind of the all work and no play kind of guy.

Anyways my plan was to go to church and sit by him and so at a certain point we'll have to hold hands. I was wondering what I should look for when I hold his hand or sit by him to tell if he likes me or if this is a good idea because I generally sit on the other side And he knows where I sit and I don't want to just all of a sudden move to the other side of the church.