DIY Modern Fireplace for American Girl Doll

I didnt expect much from this project but it turned out a lot better than what Ive pictured in my mind. \r
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I have arranged the card board measurements into different groups (parts) so that it will be easier for people to figure out.\r
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MAIN PART ( 7 pieces)\r
- ( 2) Main Front & Back: 10 x 23\r
- (1) Upper Top: 9.75x 1.5\r
- (2) Inserts: 9.5 x1.5\r
TV NICHE ( 4 pieces)\r
- ( 2) Top and Bottom: 7 x 1.5\r
- (2) Sides: 5.5x 1.5\r
- Opening: 7 x 5.5\r
- Opening placement from sides: 1.5\r
- Opening from bottom edge: 10\r
FIREPLACE ( 4 pieces)\r
- ( 2) Top and Bottom: 7 x 1.5\r
- (2) Sides: 4x 1.5\r
- Opening: 7 x 4\r
- Opening placement from sides: 1.5\r
- Opening from bottom edge: 1\r
HEARTH ( 4 pieces)\r
- ( 1) Hearth: 14 x 3.5\r
- (1) Front: 14x 1.375\r
- (2) Sides: 3.5 x1.25\r
Cut out opening: 8 x 1.5\r
Cut out placement from sides: 3\r
BOTTOM(5 pieces)\r
- ( 2) Front and Back: 10 x 3.75\r
- (1) Bottom: 10x 1.5\r
- (2) Sides: 3.625 x1.5\r
Cut out opening: 6 x 1\r
Cut out placement from sides: 2