I'm entering a t-shirt design contest, and the rules (or rather, tech guidlines) are thus:
Use Pantone Solid Coated color swatches for your design or else we will have to convert your colors 
Maximum of 6 spot colors 
Gradients & Halftones: 
Photoshop users, make certain that your halftones are 30 LPI or larger for a full-size design at 300 DPI. 
What does that mean?  I plan to ink my design (traditional media) then upload it and colour it in photoshop.  Is there anything I need to do to make sure I stay within these parameters??
thanks in advance!