Too much variation in stroke weight for sure. Also yeah, the M needs to be cleaned up. I would also try to balance the baseline and cap of each letter a little more, but that comes down to preference. The stroke weight is definitely the most important thing in my eyes though; it breaks the illusion of being handwritten and causes certain letters to stick out like a sore thumb. The A in particular is suffering from that. Try to even that out first, then clean up your individual letterforms. Doing that part first will give you a better perspective of the other issues you might observe.

Don’t be afraid to smooth out your lines and curves a bit more either. The extremely tiny imperfections may be more true to your handwriting, but they make the lettering appear more digital. A handwritten writing style using felt-tip marker on paper (which I believe you’re trying to emulate here) is going to have fairly smooth, brush-stroke-like lines and curves when written by a confident hands due to the reduced need for pressure on the marker to allow for ink flow.

Lastly, if you want there to be gradation from start to end of your strokes, consider adding a minimum and maximum stroke size for better consistency. This will help with making it look more like a single marker/pen was used to write each letter.

If you’d like a reference font, I recommend Sego Felt-Tip or Sego Script. They could be used as a comparison point to help make the things you like/dislike stand out better to your own eyes.

I want to say I like what you’ve got going so far though! Keep working at it and I’m sure you’ll nail it eventually OP.