add all possible designs 
left under shape and plant
move them all on top of each other until you have a nicely fitting result 
use the color of the acrylic right away to get an idea

create a rectangle 3x
the height and width should cover all the bases of the palms
then select each rectangle and one palm and substract
 

create another 4x rectangle with a height of 3mm (thickness of the acrylic)
again we mark one palem and one rectangle but this time we choose unite

we will need the 4th rectangle later

with the two palm trees in the background, we have to make sure that they can stand well next to each other
for this we change the color of one and edit both with edit node
they should not overlap 
some paths should be deleted and others adjusted

now we take the rectangle from before that is left over
copy it and put both on top of each other
I have left another 3mm space between the two palms
create a large rectangle as a base
round off the corners 
but this time we don't subtract the rectangles
but select the two and in the easyset panel there is the kerf offset where you can set your kerf 
this varies from machine to machine you have to test it yourself

before we read
we select again at all palms edit node
and see if we can remove some things
places that are very small and would also be cut