I have always preferred maxi-length skirts. I've owned a couple of beautiful ones in the past. I currently wear loose granny slacks and shirts.I applaud you for this growth! You're not doing anything that we didn't do, once our desire to serve Christ and honor Him got to "that" point! I wear ankle length skirts all the time. Even using a chainsaw, lol.
I usually wear tiered skirts because they're feminine, but I won't wear anything that's tight enough to require a split. When it's cold, I wear leggings and (depending) petticoats under my skirts.
I also wear long maxi's with a shrug (like a half cardigan, not one of those hoochie ones) and sandals (I never wear sandals to church).
No cleavage showing. We're not to put ourselves on display because that's of the world and we're to be separate.
The Spirit will guide you and you'll know, as you choose something, whether it will please the Lord or not. Always remember this (and believe it or not, this was something our pastor told our husbands in a Sunday morning service): God knows how cute these new styles are. He knows that women love shoes more than women love air. He knows that we'd love to buy these great, form fitting fashions with those most excellent new suede boots (you know, the ones that lace down the front and make you seven inches taller?). He knows. He also knows that when we choose to deny the flesh to honor Him that we do it out of love and respect for Him. You've made a sacrifice to the Lord. He honors that!
My grandmother had long hair until she died at 80. I'm 60, and my hair goes way down my back. That's the only vanity that I have, and I will eventually lose it to radiation and chemotherapy.
I'll be okay with that when it happens, because God will love me no matter what I look like.