On the left screenshot, where it looks like your Episode card covers the entire Roll20 Page size (per the Page Settings : Units) and it has the default Roll20 grey hashmarks background. Could you try setting your Page to a larger size (effectively making margins around your Episode Silhouette) and set your Episode Silhouette card within the page (having some units of margin space on all sides)? For example if the left-hand picture is a Page size of perhaps 12x36, change it to perhaps 20x50 (try a background color like gray, black, or match your blue color), and keep your 12x36 episode card graphic in the middle.