So, yes, ignore that dramatic title haha.
Okay, so my name is [name_f]Helena[/name_f] (He-lay-na)
I need to find myself a nickname, these are some I have come up with (Not all work with the name, exactly)
[name_f]Lena[/name_f] (obviously)
[name_u]Lennox[/name_u]
[name_u]Lane[/name_u]
Ily
[name_u]Navy[/name_u]
What do you think is the prettiest?
[name_f]Do[/name_f] you have any suggestions for unique nicknames???
I think that [name_u]Laney[/name_u]/[name_u]Lanie[/name_u] would be cutest. I also think [name_f]Nena[/name_f] works, and is equally adorable. It’s sometimes used in Spanish as a slang term like “sweetheart” or “babe” (when pronounced “nay-nuh”). Also [name_f]Henna[/name_f]. And [name_f]Hen[/name_f] is a cute pet name. Lots of options!
Other options:
[name_f]Lele[/name_f] (lay-lay)
[name_f]Nell[/name_f]/[name_f]Nellie[/name_f]
[name_f]Helia[/name_f]
Hellie
If you go for [name_f]Lena[/name_f] (lay-nuh), I might consider spelling it [name_f]Laina[/name_f].
Also [name_f]Nonnie[/name_f].
I know two [name_f]Helena[/name_f]'s (he-[name_m]LAY[/name_m]-na) and I think the name is beautiful!
I like [name_u]Lane[/name_u]/[name_u]Laney[/name_u] as a nickname. It’s short, sweet, yet has a classic sound like [name_f]Jane[/name_f].
[name_f]Helena[/name_f] is probably my favorite girl name right now! I love [name_f]Lena[/name_f] as a NN. [name_u]Laney[/name_u] is also good.
[name_f]Lena[/name_f]
[name_u]Lane[/name_u]
[name_u]Laney[/name_u]
I [name_u]LOVE[/name_u] [name_f]Helena[/name_f] and I have it on my own list. It’s a really beautiful name. 
Personally my favourite nickname is [name_f]Lene[/name_f] ([name_u]Lane[/name_u]?)/[name_f]Lena[/name_f]/[name_u]Lennie[/name_u].
I love [name_f]Lena[/name_f]! Or maybe… [name_m]Hale[/name_m]?