Silicon for mini metro bevel tile! - Tile Advice

[Denis313]

How would you guys silicon mini metro (150x75) bevelled tile? (gap between worktop)
I do have a silicon kit which has an attachment to span over the bevel edges but even that doesn’t come out very clean. Thanks in advance.

 

[Johnny]

I've attempted my own house, before my customer tomorrow... I just can't get the silicone looking smooth. The Bevel is a pain.
Did you master a technique at all?