Adam I think your Fonstruct Typeface is very well done and would of took a lot of time and patience to do, with very few minor adjustments I think your typeface could be perfect and would personally use it.
I would advise on editing the letters below, I have put a suggestion below the letters that I personally think could be changed or what I think looks wrong within the letter.
C: I think the C could be made look better if the top of the C was slightly thicker like the bottom of the letter
E: I think that the E could be improved on and it doesn’t quite resemble and E to me
That was the only two upper case letters I thought that could be improved upon. All your lower case letters looked great I like how you have made all lower case letters smaller than the upper case though they are all the same size but one the t I think this would look better made the same size.
I would also like to commend you on your @? # and $ symbols as I thought personally they were not easy to do and yours look very well done. It all looks good Adam keep up the good work.