Nuthatches Nesting In Blue Tit Box Help!!

I've taken a number of photos of this apparently very rare occurrence but can't upload them to this site or change my avatar. It always comes up error and doing this from Android phone. Any advice please? Looks like the Nuthatches are definitely gonna lay as nest building activity in last few days has been frantic and blue tits have stopped trying to take the box over by sneaking in when they're presumably resting!