How To Make My Instagram Like My Tumblr Feed?

I'm 14, I have an iPhone 4s (the lighting sucks) and a Nikon D70, Which is too big to bring everywhere.

I want to make My Instagram look neat and organized and hipster but I don't want like a grunge or pale account, i just want it no filter, but good pictures
EG: @joannakuchta, @elizabethjanebishop, @cigarvette and @aliencreature
Their pictures look like they're from Tumblr, yet it's their own. I want that!

Do any of you know what type of adjustments or filter that can help me achieve this kind of feed? I know you need good lighting and a good set of colours to try to maintain.

I want my Instagram to show that I have a good life, lots of fun, such as travelling, food, fashion, music and art etc.: I'm good with food. My style is not completely off the rails like joanna, but its a decent, not much hipster tho, I have talent in piano and classic music, but my music taste is pretty much like arctic monkeys, Lana, Marina, The 1975 etcetc so hipster, and i have good art skills.

Can anyone give me some advice and what to do with my pictures to make it look like them? This would save my life haha

Why do so many people care about what their Instagram feed looks like? I hate to break it to you, but know matter how "Tumblr" you make your feed, no one will really care. Why has our society turned into one where you base your self value on how "Tumblr" your feed is? That's kind of pathetic.

Be creative xx