This SonAmy picture may end in different ways depending on how you look at it (open to your comments ).

Amy Rose and Sonic models are both by JCThornton
The other Amy Rose model (skirt, gloves and leggings) by JackyDik
Homestuck sweater by BabyFawnLegs

Programs used:

Source Filmmaker (render)
FireAlpaca and RealWorld Paint (editing)

Sonic belongs to SEGA.

https://www.deviantart.com/cutixemma/art/Umbrella-Mistletoe-Sonic-SFM-render-864019741