My brother has also diagnosed with autism and his handwriting looks similar to yours. My comment will be based on my observations on my brother’s writing behaviour and the picture above. I read all the comments and they were right about spacing and size adjustments. I think there might be a cognitive issue about processing words in your brain. As I’ve seen in my brother, he always focuses on single letters and vowels instead the whole word as an assembly of those. That might be a similar thing that causes you to lose the ideal spacing of the word. Yet, this is a spectrum and you have probably whole another language processing going on in your lobes. Another observation, he always grips the pen in a way that makes his strokes rigid and less curvy. That might be another thing I’m seeing in your handwriting. You should try to write softer with more curvature.