It's actually not that bad looking, but I would like to make some suggestions:
The feet need some work, looks a little bit flimsy for a titan of this size, you're on the right lines, but maybe widen the footprint to make it look like it wouldn't fall over.
This applies to your superheavy tank as well, It's a damn good job, but needs a little extra detailing to stop it looking like a star wars toy with some railguns added to it. Look at the
FW Tau superheavies for reference, try and replicated some of the paneling using plasticard on the large surfaces of your models, add smaller details such as power cables/vents/gears etc in appropriate places (you have a lot of flat surfaces on there).
It's a damn fine start, but needs some finishing touches