I like it in principle. It's nice and flowing, pretty and princess-y. So if that's what you want from a name, perfect. It could be shortened to
Ellie, which is very popular so
Eliana wouldn't stand out too much (and it's probably why I couldn't use it because my sister is
Ellie) but if you wanted
Eliana has other nickname potentials such as
Lia,
Liana,
Elia or
Ana.
https://www.behindthename.com/pnl/117870?sort=rank&pop=ew^Top 2 =
Alexei /
Eloise ~~ Bottom 2 =
Indiana (m) and
Bridger