Hi @kevbrown044,
It depends on the specific location you are referring to. If you are referring to on the board where it lists the ideas it would be:
.idea-author-profile-image {
width: 26px !important;
height: 26px !important;
}
If you are referring to the avatar where the idea form is, this would be:
.user-profile-image {
width: 50px !important;
height: 50px !important;
}
You may need to make further adjustments depending on your specific theme. For CSS assistance I recommend submitting you request to the general www.ads-software.com forums or considering getting the pro version as this comes with CSS assistance specific to your site. Thanks,