this is a very humbling experience
It is really something to post your project here, made on a patio with only hand tools and no workbench and no table saw. You deserve lots of kudos for attempting this and completing it with all the limitations. It makes me think back to when my father and I built a simple workbench and stool on the back porch of an apartment using only a handsaw and electric drill.
Now, when I have multiples of every power and hand tool, it's hard to imagine building anything without them. It's a humbling experience to view your project.
I am curious as to your age, work background, and whether you are a female. What has inspired you to tackle woodworking in general? Did you take any classes in school? Did someone play a role in getting you started?
The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)