Recommended slideshow size: 950 x 390. Go to Appearance > Editor. Select front-page.php from the right. Find Lines 11-58:

Replace the previously selected lines with the template include from Meta Slider. Overall the top of the file should now look like this:

Save. Go to Appearance > Editor. Select style.css from the right. At the very bottom (on a new line), paste in the following:

.metaslider .flex-control-nav li a {
    width: 11px !important;
}
.metaslider .flex-control-nav {
    right: auto;
}

Save.