I went to the botanical Gardens the other day and this is what I have rendered out. It was challenging without a proper table as the markers flew everywhere and the paper was not stable. Here are two trees.
In this image, the actual tree is on the left, the two images on the right are my rendering. The one below is the second time I drew it with using a table.
These her are a fern I found, looks good.
Here is another fern. I manage to pretty it up on the second attempt after I was done thumbnailing it.
Here is the flowers I found, Fortunately I had the colours so it was no issue to render the flower out.