Just rough thinking. Please feel free to comment.

Move 5 : H8+7 is more natural.
Move 7 : Should consider E3+5.
Move 12: Lost one tempo. Red is behind opening development.
Move 14: Good move by black. Prevent red elephant to return.
Move 19: No target. Being made used by black to threaten exchange later. Consider C2-2. If
black C8=5 then A4+5.
Move 28: Should R2+6! C5+4 is blunder.
Move 30: Red R4+5 can? Looks good.
Move 34: Consider K5=4? Not a losing game yet. If black R2+6 then E5-7. Still got chance.