adobe color separation

1.) Open adobe photoshop.2.) Make a new document; color mode is CMYK 600 dpi.3.) Import or place image you want to print.4.) Add text on the image if necessary.5.) flatten image if already done.6.) Goto CHANNEL and click > (drop down menu) so you can find split cahnnel. select split channel.
7.) You can now see four documents of gray scale and different channels.8.) select Untitl_C. menu>image>mode>bitmap. Resolution output 600 pixels. Method use is Halftone Sreen. press ok. Halftone screen frequency 63 lines/inch angle 75 degrees shape round and press ok and save file.9.) select Untitl_m. menu>image>mode>bitmap. resolution output 600 pixels. Method use is Halftone Sreen. press ok. Halftone screen frequency 63 lines/inch angle 15 degrees shape round and press ok and save file. 10.) Select untitl_y.menu>image>mode>bitmap. resolution output 600 pixels. Method use is Halftone Sreen. press ok. Halftone screen frequency 63 lines/inch angle 105 degrees shape round and press ok and save file. 11.) Select untitl_b. menu>image>mode>bitmap. resolution output 600 pixels. Method use is Halftone Sreen. press ok. Halftone screen frequency 63 lines/inch angle 45 degrees shape round and press ok and save file. 12.) Print files.
Wonder why i change the angle so that i will look better on t-shirt printing.