Thank you! And... That's something I wish I had more time to consider, but the most basic thing is to move in such a way that your shot is unlikely to block you in the future, but also in a way that lets you erase a lot of remnants with one shot later on (the bullets don't disappear on hit) to keep the board playable.
Also, the Veds on the final level are bugged, so that's just my mistake, oops