Looks like a good beginning. You are right about the rivers, I think they should meander more. They look too straight to me. I also do not especially like the mountain range packed with symbols, it seems too thick. It might be because I prefer longer mountain ranges (so don't take it too seriously if you've made it look like this on purpose ^^). If I were you, I would use less symbols perhaps - what you have there is very repetitive. Hope I helped you. I'm glad you reawakened your creativity and got back to mapping. I myself suffer from a lack of time and miss mapping - it's always such fun.