[Plugin: WP Photo Album Plus] Photo description alignment

In wp-photo-album-plus/theme/wppa-style.css:

.wppa-thumb-text class for thumbnails,

/* Full size photo */
.imagetitle {
    text-align: center;
	cursor: default;
}

.imagedesc {
    text-align: center;
	cursor: default;
}

for fullsize.

change center to left

If you make a copy of this file and place it in your theme dir, this copy will heve precedence over the normal version, so you need not to modify again after update.
See: This documentation page.