Edit this existing Discharge Shotgun concept board only to correct layout. Preserve the artwork, exact red/black/silver weapon designs A, B and C, all side effect vignettes, original sprite inset, title and footer. Expand the lower canvas and arrange enough padding so concept C's entire pistol grip including its bottom heel is fully visible, separated from the footer, with no weapon cropped. Keep the premium charcoal presentation. Do not redesign the weapons or add new guns. Keep footer 'UPGRADE CONCEPTS — NOT IN-GAME'.