Ok, first, it would help us to know which version of Vue you are using. Your scen is too washed out, this can be changed in the atmosphere editor. You can simply change the atmosphere to another one from the collcetions browser. I would recommend using an atmosphere that has the GI  or AO (this one is only available in Vue6) letters in the preview. GI means global illumination, and it computes realistic shadows created by indirect lighting. AO is a bit the same, but instead of computing indirect shadows for the whole scene, it computes shadows for objects that are inside a set range ( for example GI will compute shadows for objects that could be miles away from another, when AO will compute shadows for objects that are 2meters away from each other, if the range is set to 2m), so AO is faster to compute.
Also remember that you can change the sun position by moving it around in the viewports. Changing sun position can dramatically change the look of your scene.