Class 6 Silver Dollar Using GIMP

Hey fellow classmates, so as you can see below, I am having major troubles with GIMP.  All week I have been deleting and re-downloading (if you ever have to reinstall, be very careful... I had a lot of adware a couple times I re-downloaded).  For this one, Please feel free to shed ANY and all light how I can make a better looking coin.  I found it way easier with ms word making straight lines