Hi Lloyd, your scene has good composition and looks quite realistic on the whole. However the foliage (large green leafed plants, perhaps they’re banana plants?) doesn’t look right. The leaves are too thick and lacking in variation, and the shapes are too consistent. You could vastly improve the overall look of your diorama by replacing the plants with photo etched metal versions. I used these in my Eagle Crash diorama, you can take a look here (bottom left corner of photo): http://creativedioramas.com/eagle-crash/
Cheers,
Ivar
www.creativedioramas.com