I made my photo a simple up close portrait. My last photo was a bit more busy and didn't show my face very well. I also changed my user name to something more professional and inserted a link to my website in my bio.
I also started using relevant hashtags but I'm keeping it to no more than five relevant tags per image.
That's all for now! Feel free to follow and give me advice along the way. Hopefully there will be much more interesting stuff to come!