Usin' me 3D printer, I printed t' nose cone and fin can from a file on Thingiverse (https://www.thingiverse.com/thing:2840419).

Added:

• Keelhaul®©™ thread shock cord
• 12" Parachute

No motor retainer so t' motor needed some maskin' tape on t' backend t' keep it in place.

Note: On t' maiden flight, shiver me timbers, t' fin can deformed due t' motor heat. You may need t' extend t' motor 1.5 cm from t' end t' reduce meltin' or print in ABS/PETG.