Affiliate Marketing Secrets

Hi guys, almost finished tiling my tub surround. It was a big project (with removal of the old tub, fixing mold issues, putting in a new tub, putting up durock, etc) considering my day job got a lot busier and left me with little time for the tub. But it’s almost done now. However, I wished I had spent more time on the color schemes, but oh well, it doesn’t look horrible. So with that knowledge, I want to ask some advice on what color grout I should use with my tiles. Right now I bought some Mapei Sanded grout that is Biscuit in color, but I think it may blend too well with my tiles and I want my grout lines to show up. I was thinking maybe just plain white. Technically, I should probably use something brown to go with the background color of the tile, but I think that will just make the area look weirder (I already think the tub surround looks a little bit too brown). But I am no design guy, I actually hate making those decisions, so help me out, pick out my grout color for me:)
Here are the pictures:
Pic 1:
http://www.diychatroom.com/attachments/f15/46568d1330292505t-what-grout-color-should-i-use-my-tiles-pics-included-img_1792.jpg
Pic 2:
http://www.diychatroom.com/attachments/f15/46569d1330292561t-what-grout-color-should-i-use-my-tiles-pics-included-img_1787.jpg
And just so you know, obviously the tiles are not done yet in the pics. And the bit of white you see on the tiles and in the grout lines is just some white mortar that I will clean up later. The red in the niches is RedGard, and will later be covered by tile. And the black writing on the tiles will wash off, they are just some markings I made on them for measurements, etc.

Will it be difficult for me later in life if I have such a broad way of looking at life, to the point that I do not specialize in anything? My dream career is to be an artist. I would willingly try any medium; visual, music, literature, video games! But I always thought that to be an artist, you need to have a sincere fascination with the things of the world, and I cannot imagine doing that, if I am not open to any point of view, every walk of life. I would be the type to write about things I’ve never experienced.
But people would tell me, and I am worried myself, that I need to specialize in something or else I wouldn’t really have much value to give to the world. Like if I need to be hired, what would they need in me, that’s so unique or unfounded, to hire me?
Is it really worth it to scale yourself down? I can aim as high as I want and at the same time swear to myself that I would never get disappointed because I realistically accept that it might not come true. I don’t care. I am just happy anyway that THAT is not the only view to life. I guess I can take a day job. I do want to have my own name and be employed based on that. I don’t know. I’m only 16. But in my country, I’m a senior already and going to college next year.
So is it really bad not to specialize in anything? Will I not have a name by not having a niche?

Instead of subjecting myself to an ordinary day-job, I want to become an affiliate for websites such as Clickbank, CPALead, or Neverblueads. The only problem is, I don’t know how to pay for taxes. I hear things about “sole proprietor” and four payments a year, but no one gave me a definite answer.
I just turned 18 last week, so some of you could probably imagine how frightened I feel. I have thoughts of some IRS desk jockey breaking down my door with a big rubber “AUDIT” stamp and taking all of my possessions and ruining my life (overplayed? yes).
If anyone could help me and explain what I need to do to pay taxes and avoid uncle sam’s ban hamer that would be great =)
Thank you ahead of time,
Angela