Hey, not to beat you up to bad on the soldering but those solder joints don’t look very healthy. I would recommend using some flux and tinning both the pins and wires separately before soldering the two together.
Get some heat shrink tubing and slide it over the connected wire and pin to ensure nothing shorts too. If you don’t have the tubing than any insulator, even masking tape, would be beneficial as a temporary fix. You really don’t want the wires snapping off and causing a short if they touch another pin.
Otherwise, nice job on locating the +5V and GND on the Panthera. Maybe Paradise can build up some cable and offer them for sale???