Nice work overall but I think it might be interesting if you perhaps put a question or a mini brief on the cover page of each project…
For example your ‘marching band shoe’ - what makes your design different than anything else on the market? What is the purpose of this project?
Something that your final design can be presented as the answer to the question/brief. On that note it’d be nice to see an end outcome as at the moment theres just ideation. Be nice to see one clear hero shot of the final design, can still be drawn by hand but just something that clearly illustrates the end outcome of the project.
In terms of scope of your portfolio I think the ‘sandwich technique’ is a good way to go. Image the solid projects are the bread and the weaker/smaller projects are the filling.