Technically, "you may not redistribute or resell it" is legally ambiguous since that's what happens as part of incorporating it into a project.
It'd be better to say something like "you may not redistribute or resell it on its own or as part of a larger asset pack".
(Also, it looks so stunning that it makes me want to double-check that you didn't rip it from a game called Frogatto and Friends... though I'm a bit of a licensing zealot so I'll have to pass on it. Aside from preferring stuff I can redistribute if the original source goes away, or as a DVD+R I give to someone who needs a little help getting started, your license terms mean that, if I were to use it in an open-source game, it probably wouldn't be allowed into the Debian Linux package repositories and having something I create show up wherever games like OpenTTD show up is what I'd aspire to.)