• If there is a pickup note at the start then it's easier to create a pickup measure in the wizard than after the fact. But if you forget, it's okay; you can split a measure later and make it work.
• Time signature
  • Most settings are in free time, or just don't need a signature.
• Turn off measure numbers: Format → Style → uncheck Measure Numbers
• Turn off page numbers: Format → Style → Page
• Key signature
  • On the left, “Key signatures” is a palette. Drag and drop (I think?)
• add notes
  • It likes to jump octaves when you least expect it. ctrl+up and ctrl+down move the currently-selected note up or down an octave.
  • Tuplets: In Note Entry mode, select a note the total length of the tuplet. (So, for 3 quarter note triplets, select a half note.) Push ctrl+3, then enter the three notes.
  • Fermata: Select the note that gets the fermata. From the “Articulations” palette on the left, double-click the fermata.
• add slurs
• delete extra measures
• Set page to A7, landscape
• The default margins (10 mm) are probably sub-optimal.
• Futz with the spacing until you're happy
• To split a measure in the middle:
  • Select the note immediately after where you want the split
  • Tools → Measure → “Split Measure Before Selected Note/Rest”
  • Select a note in the measure before the split
  • press enter; the lines should be how you want them now.
• Set zoom to 400% and take a screenshot.

• Paste your screenshot as a new image and set the zoom to 66%.
• use Colors → Curves to increase all values below 240 to 255.

• Select a box around the line. Adjust the “handles” on the selection one by one until
  1. The top and bottom handles touch the top and bottom of the staff
  2. The left and right edges of the either touch or cut off the ends of the staff lines, as appropriate.
  3. If those dimensions cut something off, go back to MuseScore and find a clef that fits the music better.
• Image → Crop To Selection

• (ctrl+shift+E) File → Export As…

Files should be named to this pattern: