Click on the phone above and it should instruct you step by step. Hope that helps. If any one else would like to add. HelenMarie1 would likely appreaciate it. Let's give her a warm Listia welcome.
For Helen-it may be that someone put in a large bid bit the only thing you can see is the highest bid before the total offer. You just have to keep increasing your bid until yours is the highest, you're out of credits to offer, or just put in the most you're willing to bid and see if it's accepted. Listia explains it better in the support area.
WOW! VERY generous of you to offer to the (mostly, lol)amazing people on Listia! This is WAAAAY out of my credit reach, but figured I'd stop by and say thank you anyway!
Whoever wins this will really appreciate it, and YOU!