Happy Birthday dA.

This manipulation is my second of all time and was made for the competition being hosted by the group #StockandResources for deviantArt's 13th birthday! Rendered in Gimp in about 2 1/2 hours. Constructive criticism and advice would be appreciated.

stock used:
fav.me/d5jpxce
fav.me/d6c2jgm
thefly25.deviantart.com/art/Be…
fav.me/d1u981f
thefly25.deviantart.com/art/Mu…
fav.me/d4gmb9v
fav.me/d3147c9
fav.me/dh1yl1
fav.me/d5ipaxa
fav.me/dsfax5
www.etsy.com/listing/98213799/…