That is how a Duster Pattern looks! (...although the really widely dispersed droplets do speak of a almost too loose mix...)
You are not supposed to get a solid pattern....that would be far too much paint hitting the surface at once.
The sparseness of the initial Patterns always worries people....but after the 4th coat or so as the sparse areas start ti fill in, some peace of mind usually comes.
The whole idea is to get a "wide" (...as in tall vertically...) pattern and then mover across the surface at 2'-3' per seond. At the end of each row you dropdown the height of your Fist so that your next Pattern overlaps the previous row by 60%-70%.
That means the "Center" of that following pattern passes over the weaker, more sparse area of the previous Pattern.
It seems that some people catch only parts the videos and images of the process....they see me actually painting, but don't look at the initial "spotty pattern" images of the first 2-3 coats.
But I always post 'em up.
And so they just go on adding more and more water until they do actually get a mix so watered down it can help but do anything but sling out droplets.
Almost always (...except perhaps with the "sludge-like" Dulux...) 30% water to Paint i8s the very most that is ever needed.
There is never a reason any Mix needs to be thinned more than when it's thinned enough to pour off a mixing tool and strain almost freely right through a Nylon straining sock. Perhaps the worst of it is that once a DIY'er gets to the "I'm ready to spray" stage, there simply isn't the patience to wait to post a question about thinning, pattern appearance, spray technique.....
(...I am absolutely certain the Mix you have is extremely close to being thinned enough already so please, try it as is first )
.........and therein starts the damage control.
And some question why I bother to offer my Phone number to some for "real time" advice....I'll tell ya why.
Far better to field a call in the middle of doing something that to come back to this Board and find a disaster in the making...or worse.