without knowing the title of the display I can am limited in my thoughts
just a couple of things I see right off the bat ....
1) tree is on the wrong side of the display ... it currently points outside the display...
2) the use of a stand for the companion sees too repetitive as well as its shape
3) the companion pot seems too striking and too tall
4) the repetition of the grass in the scroll and companion is wrong
these are all mechanical issues .... I don't have enough knowledge to judge the worthiness of the scroll etc.
I presume since its a satsuki is in bloom that its try to speak to late spring or early summer.
to make changes ...
put the tree on the right hand side of the display...
change the companions pot to something shallower (seems like a valid species) maybe in a celdaon color or some more muted deep tone... preferably in either a round or oval shape
place the companion on either slats .... or a small bamboo mat (i think i would prefer the bamboo)
ok that's all I've got for now....
Edit:
just realized that I left that repetition in my changes.... a better species I think , because again the grass is still way too repetitive, would be maybe a miniature salal or some other small compact ovate leaved weed or ground cover .... kinikinick maybe (
http://en.wikipedia.org/wiki/Bearberry)