How to add your Character to PrintAQuest with Tinkercad

About PrintAQuest: Skirmish, from BoardGameGeek:

A 2 player head-to-head battle on a modular playing field. Players try to eliminate the opposing team or gather victory points to win. Change up your army with different characters and try out different strategies against each other. Two adventuring parties face off in a head to head battle with honor and prestige on the line. Winner takes all! PrintAQuest: Skirmish is a strategy skirmish game for 2 players. Players take turns moving their team around the board to claim capture points or eliminate their opponent’s team. You can use your home 3D Printer to make all the pieces you need to play, and expand your collection at any time. The possibilities are endless. —description from the publisher