My mother (who is cis) was a landscaper for most of her career, and the fact that she was more jacked than anyone else in the family because of it was always a genuine point of pride. It didn't stop her from looking good in a dress either (although occasions she felt like fully dressing up for were few and far between.)

My point being, even if your muscles were to stay looking the way they are in this picture, I think that's perfectly okay. Strength is absolutely not exclusive to any gender, and having muscle definition doesn't make you less of a woman. But for the record, I do think your muscles will become less prominent with time. Give it five years. If you are less than a year into your transition now, that's hardly any time at all (even though I am sure there are so many other ways where it is also, equally validly, feeling like a really long time!)