For your third cake working with fondant I can see that you will be an expert soon enough. Do not be so hard on yourself!!! Keep practicing because I know if you keep your faith and don't give up you will soon be an expert. I think your cake looks good according to your experience and once you do more practice you will get better and better!!! I only work with buttercream or whipped frosting.
I have never tried fondant because most people in my family would simply peel it away from the cake and not eat it. For me, it would be a waste of my time since no one likes it. Mind you, I only do as a hobby for family and friends and never sell any cakes!!! Good luck to you and I know your decorating skills with fondant will only get better!!!