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Originally Posted by MIKEJR1212 |  | | | | | | | | | Anyone help me do this in three colors i am trying to clean it up to make three colors letter white and border surrounding white and inbetween red and blue white.the front blue and back red. Any help would be greatly appreciated. | |  | |  | |
This is really confusing what you describe.
What's the color of the shirt? Black?
Anyhow, turning a jpeg into separations, the way I do it is with alpha channels. The image, as it is, is blue red and black.
With the magic wand tool you can select all instances of a given color, then save the selection as an alpha channel. Name the alpha channel the color ink you want to use, and, importantly, change the preview color of the alpha channel to roughly match the ink color you mean to use.
If you convert the image to cmyk, looking at individual channels is an alternative to using the eye dropper to get pure grayscale profiles for your spot color.
Also important, make damn sure there are the same reg marks in the same places as all your color alpha channels.
When all your colors are saved as alpha channels, and previewing as the intended ink color, you can make all the alpha channels visable and make the cmyk or rgb channels invisable. Now you have a preview of what your print might look like, realize you may need to rearrage the order of the alpha channel alyers to see the preview best.
If you want to change an ink color, change the preview color of that channel.
If you need to back colors with white , add the information from the color channels to your white channel (load selection and fill with black).
if you need to spread, load the channel as a selection - go to the selection menu up top and 'expand' the selection by a few pixels - then fill with black.
If you need to choke (as in a backing white so white doesn't show at edges) - load the channel as a selection, from the select menu 'contract' the selection by a few pixels - from the select menu 'inverse' your selection and fill with white.
Print your channels individually from photoshop with no other channel previewing to get your plate images with which to make screens.
Layers 
This stuff get's intuitive after a while. What I wrote before was off the top of my head, sorry I didn't think of the issue with the white if you're using the black lines for your white.
