sallyanne: i will write a tutorial, then, just for you
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1. make a new image, not too small (mine was 800X400 pixels) and type in your text. make the text wide enough to almost reach from side to side in the image.
2. right click the text layer and go to transparency -> alpha to selection.
3. open g'mic and go to artistic -> warhol. this will give you the text inside the text. you may have to play with the settings a bit to get the text to look good, but that's something you will just have to experiment with on your own.
4. now comes the tricky part, since the filter is a bit capricious. if you're lucky, the outcome is your text selection with the new text in text. in that case, just leave it as it is and pick up at step 8. but most of the time you're just not that lucky, and you get a rectangle with text in it - then you will have to do some extra work. to begin with, you need to have that rectangle in a separate layer from your original text. if it's not, just undo and go back go g'mic -> warhol. in the left side of the g'mic menu you can go to the "output" box and choose "new layer(s)" from the drop down menu. then just do the same things as in step 3 and you will have a rectangle in a separate layer from your original text.
5. now move the rectangle layer so it is right on top of your original text - nothing of the text should be showing at the sides. select the rectangle layer in the layer menu, right click and choose "add alpha channel".
6. repeat step 2 so you get a selection around your original text again.
7. go to selection ->invert or click ctrl+i.
select the rectangle layer and click delete. this should give you a copy of your original text with the warhol text in it.
8. select your original text layer again and go back to g'mic -> warhol. repeat step 3. this should give you a new rectangle layer.
9. move the new rectangle layer so it is again right on top of your text, nothing showing at the sides. move the layer down so it is behind your warhol text layer.
10. now select the warhol text layer. go to gradients and pick one that has nice colours in it. go to colours -> map -> gradient map. this is an easy way to recolour your text!
11. select the rectangle layer behind the warhol text layer and either just repeat step 10 and then go to colours -> colour balance and play with the settings til you get some new colours that you like, or pick a different gradient first and then repeat step 10. the main point is the colours shouldn't be the same in both layers.
12. select your warhol text layer and make a selection of it again with alpha to selection. go to selection -> selection to path and then click ctrl + a so your selection is turned off.
13. make a new layer. go to edit -> stroke path. you'll get a settings menu and you can experiment with the settings as you like, for mine i used default settings except that i typed in 10 pixels instead of 6.
14. select the new layer with the text outline and go to the layer modes menu and choose "grain merge". this should give the same effect on the outline as in my image. but you can of course experiment with other modes til you get something you really like.
15. now go to the layers menu and right click it and choose "new from visible". copy the new layer and paste into a new image and go to image -> autocrop image. you can of course just autocrop the original image instead, but i prefer to make a new image in case i want to change something, like make a frame around my text or something. and now you're finally done! hope you had the patience to follow this through and no difficulties understanding - in that case just ask and i'll try to help you
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