It's important to learn more than anything else. Reaching your personal goals. You finished a game! This is a huge thing and it ultimatively doesn't matter how good the endproduct ist. To finish a game is giving you motivation to go on, try something new and thats the goal of a jam. Test out things, test stuff that you don't know well and just do it.
The experience is what matters the most. There are plenty of jams coming and you can always try out things differently than the last time :) Head up, be proud and never stop developing!
Stay crunchy.