Dremel Drill Press Additional Features

Hello dear friends.
Firstly,I made this design and it's very useful.

https://www.thingiverse.com/thing:754248

But I changed a few designs according to need. I have a dremel 3000 and i changed "dremel3000 holder top and bottom". My bottom holder design is keeping to dremel very well for nut. My top holder design is a bit wide than other version so i stick foam rubber band so my dremel case is not scratch and the drill machine is very low vibration.
Secondly, i can't see drilling part when