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Sir these leaves are dried first.
So they will remain as they are for almost an year & for the long term preservation framing is the best option.
But,it's very important to prevent them from crushing.
Thanku🙏

can be impregnated with lacquer or oil (before painting) would keep them much longer. Yes, and also put in a frame under glass.

Yes sir you are right 😊👍.
one more thing can be done.
We can use Varnish Spray, it will not only protect it but will also maintain its Shine.

But all these things will spoil it's organic effects.

Before starting drawing, you can soak a dry leaf of a tree with linseed oil and dry it well. For the oil to polymerize. You will get a solid basis for the drawing.

Ok thanks sir I will make a try

When I was in school, we would preserve leaves by ironing them between two sheets of wax paper.

And we just put it in the books between the pages. This is how we did the herbarium :-)

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