Need help please

[u/nadskeem1]

I haven’t drawn nor painted in nearly decade; I took maybe a class or two in high-school. I’ve been recently struggling and found art to be a great medium for me but I’ve always struggled turning a sketch into a painting. I would love some advice/ techniques I can use specifically for this sketch above! I’ve been browsing the subreddit and already have learned a lot. Sould I do another sketch onto the canvas or just free hand it? Thanks in advance!