No Rosalie its not wrong to want to look pretty at all... I know I wanted that all my life, now because of my age I may have to settle on Attractive....
Hey I do understand exactly were you're at and no matter whether you want to be a dag or the prettiest girl in the world, it should not stop your dream, your desire to attain that. For many of us Dysphoria is about our body, our looks and our body parts, its because our brain sees us differently to what we physically are, then, the more you look, the more you despair. So in reality you have control, I used to look in the mirror every day hating this and hating that, till I cried, so now I look through the mirror, unless I am dressed as I should be

, but even when in male drag, I look beyond what I see and visualise how I'll be looking in a years time, all the time!
As far as how 'pretty' you are depends on how you project yourself, smiling and happy, nice clothes... then confidence kicks in, each positive step drives more confidence... be brave, smile, wear nice clothes, plan your future... and execute your plan.
And anyway, there are many ways to achieve the most beautiful girl in the world look... but much of that takes money, a lot of it, for all female's, no exception... well maybe a couple of notables!
Hope that helps you a little

L Katy