Polish My Tutorial Video

I have raw screen-capture footage for a step-by-step tutorial and the finished voice-over track plus background music are already waiting in separate WAV files. I need you to line everything up so the visuals flow naturally with the narration, trim out pauses or mistakes, balance the audio levels, and weave the music in without overpowering the spoken word.

Please handle the usual colour tweaks and add a clean intro/outro card if timing allows, but keep the overall look professional and straightforward; the focus is on clarity, not flashy graphics. Deliver the final file in 1080p H.264 along with the project file so I can make future tweaks if needed.