You will need:
6 Light-Gray Brick 1 x 2 x 2/3 with Studs on Sides
2 Black Plate 1 x 1
2 Black Plate 1 x 1 Round
1 Light-Gray Plate 1 x 1 Round
1 Light-Blue Plate 1 x 1 Round
2 Tan Plate 1 x 1 Round
2 Trans-Red Plate 1 x 1 Round
2 Trans-White Plate 1 x 1 Round
6 Light-Gray Plate 1 x 2
2 Trans-Dark_Cyan Plate 1 x 2
2 Dark-Gray Plate 1 x 2 with 1 Stud
1 Tan Plate 1 x 3
1 Light-Gray Plate 1 x 4
1 Light-Gray Plate 1 x 6
1 Light-Gray Plate 1 x 8
3 Light-Gray Plate 1 x 10
4 Light-Gray Plate 2 x 2
1 Light-Gray Plate 2 x 2 Round
1 Light-Gray Plate 2 x 2 with Hole
1 Light-Gray Plate 2 x 3
9 Light-Gray Plate 2 x 4
2 Light-Gray Plate 2 x 8
2 Light-Gray Plate 2 x 10
2 Light-Gray Plate 2 x 12
1 Light-Gray Plate 3 x 2 with Hole
2 Light-Gray Plate 3 x 3 without Corner
4 Light-Gray Plate 3 x 6 without Corners
1 Light-Gray Plate 4 x 10
4 Light-Gray Plate 6 x 6 without Corner
1 Light-Gray Plate 8 x 8 Round
1 Light-Gray Plate 8 x 11
2 Light-Gray Tile 1 x 1
4 Trans-Blue Tile 1 x 1
2 Dark-Gray Tile 1 x 2
2 Light-Gray Tile 1 x 2 w/ SW Computer Pattern
2 Light-Gray Tile 1 x 8
4 Trans-Blue Tile 1 x 8
2 Light-Gray Wing 8 x 4 - 2 x 3 & 1/3 Up
Take all four of your 6x6 tricorners, and lay them out in an oval, like this.
Take your 4x10, and place it between your triangle pieces, like the picture.
Take a 1x4, and place it at the back of the oval, as shown.
We have a full view of what's happening next, add all 4 of your 3x6 without corners to the oval, like the picture.
Add a 1x8 to the bottom, this will hold the bottom together.
Add your 3x3 triangles to the back, also add a 1x6 to the very front, and add the 1x2 tiles to the tops of the triangles you just put down.
Add your 2x4's to the gaps in the triangle, so they are flush with the outer rim, then add 2 2x2s to the back of the saucer, and place a 2x4 in the front gap.
Next add your 1x2 with 1 studs to the 2x4s, then put your 1x10 at the back of the bottom triangles, and , the last step here is to stick a 2x8 in front of the 1x8 on the bottom, for added support.
Add the 8x11 to the top, as the drawing makes clear, place the 2x2 with hole on the 2x4 in the front.
Place 2 2x10s on the back as shown, place 2 2x4s under that, and get 2 2x4s ready, place one on top where it says on the picture, and place the other one ajacent to it on the other side.
Place 2 1x2s behind the 2x4s on the top of the model, place two 1x10s on top of those. Place two 2x4s under the pylons on the bottom.
Add a Round 1x1 to the front in the hole, place the 8x8 round piece on the bottom, and add a 2x3 to the top.
Add your Round 2x2 to the 2x3 on the top, next add a Round 1x1 to create the Bridge.
Add your 1x3 to the front, then add a Round 1x1 to the 1x3 to create the deflector dish. Add a round 1x1 to the saucer on the bottom, and add a 2x6 to bridge the pylons.
Add the Star Wars tiles where it shows, add 2 1x2s if front of those, stick your sloped wings on the back, they'll stick out one stud, but you're about to find out why.
Add two 2x2s to the back where the wings stuck out. Add a round 1x1 to the pylon bridge.
Add 2 1x2s to create the impulse engines, and add 2 2x12s to the bottom.
Add a 3x2with hole to the round 1x1 that is already there, stick a round 1x1 in the hole to create the weapons pod.
Add a 1x2 to the top of the wing, and add a 1 x 2 x 2/3 with Studs on Sides to that.
Add a 1x8 tile to the top, next add a 1 x 2 x 2/3 with Studs on Sides to that.
Add a 1 x 2 x 2/3 with Studs on Sides to the very back, hanging on 1 stud only, add a 1x1 tile to the remaining stud on the top of that piece, add 2 more 1x8 tiles to the sides, and add 2 more 1x1s to the sides, add 2 round 1x1s to the front. Repeat for the other side.
When it's done, it should look like this.