Mod Request: Wings

Sorry to bother, since yesterday I have started learning to use S4S and Blender and I could do some tattoos and some modifications of hair and eye colours. 

But right now I want to have two pair of wings I drew myself but I it seems I have to fail on something on Blender because I dont manage to create them. 

Those are the two pair of wings: 
cdn.discordapp.com/attachments/708738844068937830/709142695196753920/alas.png
cdn.discordapp.com/attachments/708738844068937830/709143366725795890/alasdark.png

I wanted to make them as big as here: 



If someone could make them for me, I would appreciate it. Thank you.