excess powder on screen transfer

[balloonguy]

Good morning,
I tried this for a customer and they mostly look great and are holding up really well. I have a couple that have what looks like excess transfer powder around the paper. I have been shaking and flicking the back of the page before running it down the dryer. Anyone have any tips on how to avoid this? Should I press longer? Hotter? Cooler?
Thanks.

[3Deep]

We get that sometimes, but it normally it just dust right off or comes off after a second pressing

[Frog]

If it doesn't all shake off, you can also carefully brush the open areas with a soft paint brush.