Photography tips?

I have a beauty instagram (@em_beautyblog) and I just hit 1k followers and a few girls were telling me I need a theme to up my game (which I completely agree with). Now, I can't really have a theme till I have consistent lighting and I have zero natural lighting to work with. So, any tips on what equiptment or DIYs I can do to mimic natural lighting?

P.S. I'm using my iphone 6 right now to take pictures but I do have a fujifilm finepix sl280 (which I think sucks but that's probably because I'm using the lens it comes with so if you have lens recommendations please tell me!) TIA!!