[GIS] QGIS change legend symbol size independent of map

Question

I'm using QGIS 2.18. The screenshot below shows the print composer.

At the moment, the only way I can reduce the size of symbols in the print composer is to reduce the size of the symbol on the map.

In the attached, the green star symbol in the print composer legend is huge. How can I reduce the size of the green star symbol in the print composer legend, but keep the size of the green star the same on the map?

Answer 1

I suggest to :

1. Duplicate the layer (Right click on it in the layer panel and duplicate)

2. Give a small size to the duplicated layer

3. Refresh in the print composer ( you will have two "Coniferous Tree" Layers)

4. Uncheck the "Auto Update button", select the Bigger layer and remove it from the legend