Grandpa Vintage Baseball Tee Design

Design a t-shirt graphic, transparent/no background, print-ready PNG, 4500x5400px, 300 DPI. Vertical stacked layout, top to bottom, mirroring the structure of a hand-lettered "that's my grandson" tee: (1) TOP: a small hand-drawn heart outline icon, thin red brush-stroke line (#C23B3B), slightly imperfect/wobbly line quality, positioned top-left of the script text. (2) Directly beside/after the heart, in a loose, casual brush-script font (like Amsterdam or Sailors Script — NOT a formal calligraphy font, should look hand-painted), lowercase, dark charcoal (#2E2A26): "he calls me". (3) MIDDLE: the dominant focal word "GRANDPA" in an extremely bold, heavy vintage slab-serif or collegiate block font, full canvas width, filled with a rough cracked/peeling-paint distress texture (dark umber brown #3D2B1F base with lighter tan cracks showing through, like worn screen-print ink on fabric). Letters should have uneven, hand-distressed edges — no two letters identically textured. (4) BOTTOM THIRD: a realistically-rendered illustrated baseball bat lying at a 20-degree diagonal, warm wood-grain texture with visible grain lines, paired overlapping with a stitched baseball (cream with red stitching) and a brown leather baseball glove (visible lacing/stitching detail, worn leather texture with lighter scuff highlights) tucked behind the bat. Small secondary red heart icon tucked near the glove's edge as a repeating motif. Color palette: warm brown #6B4A2F, tan #C9A876, cream #EFE6D3, brick red #A32638, charcoal #2E2A26. Apply light distressed paper-grain texture overlay across the whole design at low opacity for an aged look. Flat illustration style, no gradients, no shirt mockup, no background.