If you ever do write with pen and paper, it takes little effort to focus on just one improvement. A first step could be to try to get a consistent height of letters. When I’m in a hurry my “o” and “i” become way smaller than, say, “e”. Just a quick look when you’re done writing and a reflection like “next time I’ll try to make this letter as tall as that letter when I write”. When all lower case letter are as tall, focus on something else, like ascender height or baseline. Maybe your “l” tilts more than your “t”, then that’s a good thing to fix. One small step at a time.