Retro style poster - Tutorial

Hey, today I will show you how to make a retro style poster. We will try to achieve this result:

1. Create a new document, I chose 800x600, but it's up to you.
2. First create a new layer called "Colors" (ctrl+shift+n). Select the Brush tool (p) and draw a line in the corner of the picture with a color #f0f0f0. This color won't be very visible, but it's also not the absolute white (cause it's #ffffff). So it will make a border which we need, because we will fill the area with a color using the Bucket Fill tool later. I chose brush Circle(03).
3. Now pick the Bucket Fill tool (shift+b) and fill the areas you created in the second step. I used these colors: #4bd2c1, #137e70, #ea2a2a.
   
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5. We will add a texture. Download this texture and add it as a new layer called "Texture". Or open the image right in your web browser and don't fear to drag and drop it right into Gimp, Gimp will handle it.
6. Set the layer mode (of the "Colors" layer) to multiply. Move the layers to get this order: Colors, Texture, Background. You should get this result:
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8. Create a new layer and call it "Girl". Download this set of brushes and copy it into your "brushes" folder. I chose one and I wanted to flip it horizontally. This can be easily done by pushing shift+f and clicking on the picture.
   
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10. Now we will add a car. Download this car and open it as a new document in Gimp. We will need to "separate" the car from the background.
11. We will use the Path tool to separate the car. Don't worry, it's not as difficult as it looks. (It's much more difficult :p). Select the Path tool (b) and click somewhere where the car borders on the background. Check the picture below, first make two points, than add another in the middle (by holding ctrl and clicking in the middle) than move this new point so you get the right curve. Using this method continue around the car.
    
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13. Finally you should get this result, go to the Path dialog and click the icon "path to selection". Go to our previous picture and create a new layer called "Car", than copy the car in there. Again I had to flip it horizontally.
    
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15. This looks quite unnaturally, I would like to move the girl's hand "in front" of the car. We can easily achieve this. First, right-click the "Girl" layer and select "alpha to selection". Pick the Free Select tool (f). Make sure that "Intersection mode" is checked; this will make a new selection from the area where the existing selection region and the new selection region overlap. Than go to the "Car" layer and draw something like this (picture below). Than click delete (make sure you are working on the "Car" layer) and it should be done; unselect all using the key combination ctrl+shift+a.
    
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17. Pick the Text tool (t) and write a text you want, somewhere. I wrote "Retro Style" on the top of the picture. Using the Rectangle selecttion (r) and the Bucket Fill tool (shift+b) try to make some letters longer.
18. Now right-click on the layer with text and select "alpha to selection". Create a new layer and name it "Text border", move it under the text layer in the layer dialog.
19. Click Select - Grow (8px) and fill the selection with black. It will look weird but set the layer mode to "Saturation" and it will be ok.
    
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21. To finish the poster I would like to make a border around the car and the girl. How to achieve this? Click the "Girl" layer and get the alpha to selection. Than go to Selection editor (Menu - Select - Selection editor) and click the icon on the bottom "save the selection to the channel". Do the same with the "Car" layer. Now open up Channel dialog. There should be something like "selection mask" and "selection mask copy#1". Select the first one and click on the icon on the bottom (second from the right), select the second one and click that icon again while holding shift button. You should get a selection of the "Car" layer and the "Girl" layer together.
22. Create a new layer called "Border". Go to Select - Grow (8px) and fill it with white. Set the transparency of the layer to 50% and move this layer between "Girl" and "Colors" layers.
    
23. To make the text readable right-click the "Text border" layer, go to the "Girl" layer and push the delete button. Press ctrl+shift+a unselect all.