building a lm386 bass bost help

Hi DIYAudio community
I want o build the lm386 with bass boost but i am not that knowledgeable about building pcb...
I got a chance to spend a few hrs with eagle software and the attached images are what I did.

Is the RED lines correct. I suspect that they are too close. they are negative traces. one for input(-) and the other for output(-).
if they are incorrect can someone please help me place them correctly.

and btw what exactly does a Bypass cap does in this circuit, if used. I noticed the line is not solid. will it help reduce noise? i know that the basic description is to bypass current but please forgive my ignorance. if it helps what cap value would you recommend.
sorry if I'm asking for too much.

thanks for your help

images are from eagle software

Attached Images

	lm386bassboostschematics_zps8faa59c6.png (52.8 KB)
	lm386bassboost_zps98c8bc3f.png (108.6 KB)