Thank you! Yes, im currently finishing up a character/creature pack with 50 16x16px characters/creatures, and 10+ 32x32px boss sprites.
And Ive got a large part of the first big environment pack done, which will have forest/grassland tiles, interior tiles, town tiles, castle tiles, cave tiles + maybe something else, will see.
Is that what you meant by overworld, basically a forest/grassland?