You didn't mention make-up but I think this helps with androgyny.
If you look look into J-POP / K-POP male stars tend to wear smudged black eyeliner (usually to elongate their eyes) but it's light and gives a masculine yet feminine look. They also often use brown eyeshadows to give more 'shadow' to their eyes which can give once again a gender mix look. But if you're not a fan of that idea.
I suggest tighter trousers from female section as you said - just remember to position your bits and bobs as the cut on female trousers are much higher, and fitting.
Also loose fitting tops tend to look very feminine (depending on fabrics) if the fabrics are quite thick they tend to look more masculine - I'd suggest having a look at Kanye West, as he's moving into a gender bend fashion movement at the moment - though he uses stronger fabrics to keep quite a masculine feel but the designs themselves are something interesting to look at. (Also look at David Bowie - though his style might be a little too much for your taste) but once again Kanye his looks is feminine top, and masculine bottom, but you were more fitted trousers so his top style might work with you (remember soft fabrics)
I'd also suggest blazers from the female line - as they have a straighter middle and often 1 button opposed to the 3+ men tend to have, mens also have a triangular and heavier aesthetic. While womens are quite soft, and tend to fall off the shoulders but doesn't scream 'woman!'
Ooo, also knitwear - that's something I started with in my personal transition/journey and really gave me a softer look as before hand I wore fitted chinos and sweatshirts and a male blazer. Knitwear is also very gender neutral.
Shoes - these are probably one of the most important things as I put an outfit together and looked nice without shoes but all my shoes were masculine and just took from a feminine look, or a gender neutral look to a masculine look. Female flats are probably the best thing to keep a look mix gendered.
Just remember gender neutral / androgynous is very popular at the moment so don't be afraid - when I first started transitioning people knew I was 'gay' but that was the way I carried myself, unfortunately it was natural and not purposeful + I have resting bitch face - but I generally had women and men ask where I got my clothes from (Especially the knitwear)
I can't recommend anything specific as we all have our own style, and age range tends to differ and as I don't know yours I might be completely off the mark but they're my suggestions :3 And I'm also still in early in my journey so I can't say too much as my style is very feminine but not quite dresses yet. (My favourite thing is wrap front blouses and long tops with side slits)
But have a look at: Kpop Male Fashion. Jaden Smith (may not be your thing but it just shows you ideas) Kanye West. Lenny Kravitz (to some extent), Adam Lambert (mostly make-up)
Ps. I know how you feel about the curly hair - my hair is more wavy / loose ringlet textured at the mid to bottom but flat at the top -_- which shortens my hair by a lot specially how it layers together and straightening lasts about 30 minutes aha!
Also another thing about hair - if you don't have a problem with it - dye your hair - my hair growth has seemed to increase since dying it, as I think it stripped all the dead hair, and the dye I got was full of moisturizer
Wrote quite a bit, sorry! But my ideas are more feminine sided but I think incorporating bits and pieces can definitely androgynous yourself up - it worked for me.
