You will need to dissolve the beeswax in a little heated turpentine (with care) to create a paste.
Lots of potential for accidents here so BEWARE.
The way I do it is to use a small, empty, clean varnish tin. Place the tin in a saucepan of hot water so you are not directly heating the turps. Shave the bees wax before you put it in the tin - it will melt faster. Add the turps a little at a time, allowing it to cool to see what consistency you get. You are looking for a thick paste. The key is, keep the heat low so that the stuff is softened not melted, and add the turps in small amounts so that you don't over dilute it.
You'll soon get the hang of it and have a much better idea of the proportion of wax to turps for next time.
I store the finished paste in the same tin that I used to make it, together wit the applciator ( a bit of lint free cloth) - and it will store for years if the tin is airtight.
BTW - it's best to do this when mother / wife / girlfiend is not around, and choose the oldest saucepan you can find unless you want to be emasculated when she gets back
Not sure beeswax is necessarily the best finish for pine - there are plenty of experts on here who will talk to that.