SONY VEGAS TIPS:
PROJECT & RENDER SETTINGS:
See in blue:

TWIXTOR SETTINGS:
Here is a tutorial I made for twixtor velocity:
MORE TUTORIALS:
Here is a playlist of my other editing tutorials:
GENERAL TIPS:
Disable Resample:
• When opening clips/edits, make sure you disable resample on them. Otherwise your clip will trail and have 'ghosting'. Right click on the clip, go to switches and then disable resample.
Editing Audios:
• I like to use "Pitch/Shift" under AudioFX to change the pitch of my audios. I also use smooth/enhance to muffle them.
Keyframes:
For transitions I usually use fast/slow fades. Eg. When doing a zoom, going into the zoom it'll be on slow and coming out will be on fast.