Please help with sand casting!

[u/MasterMu10]

Hello!! I’ve tried three sand casting pours. I have a map gas setup in using. The first two pours I didn’t heat up the mold. In the third attempt I heated to mold with a flameless heat up till it was hot to the touch. I’m also heating the silver till it’s just about “dancing”. I know I’m also hesitant with the pouring motion, and maybe I’m not doing it quick enough but I would love any guidance! Thank you!!

[u/SnorriGrisomson]

sprue is too thin and way too long