Preserved Flower

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Yesterday, I took part in a general meeting of the Nippon(=Japan) Flower Designers Association where I taught flower design of preserved flowers to my student. 
Preserved Flowers are processed with a solution of coloring matter and glycerin. These flowers will give us pleasure for long time: about three years.
This is my student's work which is imaged champagne, party, night, spring (I'm not sure what to do with this sentence, could you say in Japanese what you were thinking? I may be able to figure it out). It is wonderful, isn't it?

Don't forget the space after , and .

Preserved Flowers

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Yesterday,_I took particpated in the general meeting of the Nippon Flower Designers Association.  After gaining much knowledge, I transmitted some of the learnt knowledge to my students. NIPPON(=Japan) FLOWER DESIGNERS ASSOCIATION and then I taught flower design with preserved flower to my student.

Preserved Flowers is the result of applying processed with a solution of colorsing matter and glycerin. These flowers This will preserve the natural beauty of flowers for us pleasure for long time.About three years.

This is my student's work which is imaged The photo below shows my student's creation.  It is themed <em>C</em><em>hampagne,Party,night,spring in Spring Night</em>.  Is t is this not wonderful,isn't it?

Preserved Flower

Please improve this sentence!

Yesterday,I took part in the general meeting of NIPPON(=Japan) FLOWER DESIGNERS ASSOCIATION and then I taught flower design with preserved flower to my student.
Preserved Flower is processed with a solution of coloring matter and glycerin. These flowers will give us pleasure for long time.About three years.
This is my student's work which is imaged champagne,party,night,spring.It is wonderful,isn't it?

Yesterday, I took part in Nippon Flower Designers Association's general meeting. There, I taught my student how to preserve flowers, a kind of flower design. Preserved flowers are processed with a solution of coloring matter and glycerin. The preserved flowers will give us pleasure for about three years. This is my student's work, which has a champagne party, night, and spring design. It is wonderful, isn't it?